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Alma Linux: CVE-2023-52486: Important: kernel security update (Multiple Advisories) Severity 5 CVSS (AV:L/AC:L/Au:S/C:N/I:N/A:C) Published 03/11/2024 Created 08/13/2024 Added 08/12/2024 Modified 01/30/2025 Description In the Linux kernel, the following vulnerability has been resolved: drm: Don't unref the same fb many times by mistake due to deadlock handling If we get a deadlock after the fb lookup in drm_mode_page_flip_ioctl() we proceed to unref the fb and then retry the whole thing from the top. But we forget to reset the fb pointer back to NULL, and so if we then get another error during the retry, before the fb lookup, we proceed the unref the same fb again without having gotten another reference. The end result is that the fb will (eventually) end up being freed while it's still in use. Reset fb to NULL once we've unreffed it to avoid doing it again until we've done another fb lookup. This turned out to be pretty easy to hit on a DG2 when doing async flips (and CONFIG_DEBUG_WW_MUTEX_SLOWPATH=y). The first symptom I saw that drm_closefb() simply got stuck in a busy loop while walking the framebuffer list. Fortunately I was able to convince it to oops instead, and from there it was easier to track down the culprit. Solution(s) alma-upgrade-bpftool alma-upgrade-kernel alma-upgrade-kernel-abi-stablelists alma-upgrade-kernel-core alma-upgrade-kernel-cross-headers alma-upgrade-kernel-debug alma-upgrade-kernel-debug-core alma-upgrade-kernel-debug-devel alma-upgrade-kernel-debug-modules alma-upgrade-kernel-debug-modules-extra alma-upgrade-kernel-devel alma-upgrade-kernel-doc alma-upgrade-kernel-headers alma-upgrade-kernel-modules alma-upgrade-kernel-modules-extra alma-upgrade-kernel-rt alma-upgrade-kernel-rt-core alma-upgrade-kernel-rt-debug alma-upgrade-kernel-rt-debug-core alma-upgrade-kernel-rt-debug-devel alma-upgrade-kernel-rt-debug-kvm alma-upgrade-kernel-rt-debug-modules alma-upgrade-kernel-rt-debug-modules-extra alma-upgrade-kernel-rt-devel alma-upgrade-kernel-rt-kvm alma-upgrade-kernel-rt-modules alma-upgrade-kernel-rt-modules-extra alma-upgrade-kernel-tools alma-upgrade-kernel-tools-libs alma-upgrade-kernel-tools-libs-devel alma-upgrade-kernel-zfcpdump alma-upgrade-kernel-zfcpdump-core alma-upgrade-kernel-zfcpdump-devel alma-upgrade-kernel-zfcpdump-modules alma-upgrade-kernel-zfcpdump-modules-extra alma-upgrade-perf alma-upgrade-python3-perf References https://attackerkb.com/topics/cve-2023-52486 CVE - 2023-52486 https://errata.almalinux.org/8/ALSA-2024-5101.html https://errata.almalinux.org/8/ALSA-2024-5102.html

Huawei EulerOS: CVE-2024-26614: kernel security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 03/11/2024 Created 07/02/2024 Added 07/01/2024 Modified 07/01/2024 Description In the Linux kernel, the following vulnerability has been resolved: tcp: make sure init the accept_queue's spinlocks once When I run syz's reproduction C program locally, it causes the following issue: pvqspinlock: lock 0xffff9d181cd5c660 has corrupted value 0x0! WARNING: CPU: 19 PID: 21160 at __pv_queued_spin_unlock_slowpath (kernel/locking/qspinlock_paravirt.h:508) Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 RIP: 0010:__pv_queued_spin_unlock_slowpath (kernel/locking/qspinlock_paravirt.h:508) Code: 73 56 3a ff 90 c3 cc cc cc cc 8b 05 bb 1f 48 01 85 c0 74 05 c3 cc cc cc cc 8b 17 48 89 fe 48 c7 c7 30 20 ce 8f e8 ad 56 42 ff <0f> 0b c3 cc cc cc cc 0f 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffa8d200604cb8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff9d1ef60e0908 RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff9d1ef60e0900 RBP: ffff9d181cd5c280 R08: 0000000000000000 R09: 00000000ffff7fff R10: ffffa8d200604b68 R11: ffffffff907dcdc8 R12: 0000000000000000 R13: ffff9d181cd5c660 R14: ffff9d1813a3f330 R15: 0000000000001000 FS:00007fa110184640(0000) GS:ffff9d1ef60c0000(0000) knlGS:0000000000000000 CS:0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 000000011f65e000 CR4: 00000000000006f0 Call Trace: <IRQ> _raw_spin_unlock (kernel/locking/spinlock.c:186) inet_csk_reqsk_queue_add (net/ipv4/inet_connection_sock.c:1321) inet_csk_complete_hashdance (net/ipv4/inet_connection_sock.c:1358) tcp_check_req (net/ipv4/tcp_minisocks.c:868) tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2260) ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205) ip_local_deliver_finish (net/ipv4/ip_input.c:234) __netif_receive_skb_one_core (net/core/dev.c:5529) process_backlog (./include/linux/rcupdate.h:779) __napi_poll (net/core/dev.c:6533) net_rx_action (net/core/dev.c:6604) __do_softirq (./arch/x86/include/asm/jump_label.h:27) do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) </IRQ> <TASK> __local_bh_enable_ip (kernel/softirq.c:381) __dev_queue_xmit (net/core/dev.c:4374) ip_finish_output2 (./include/net/neighbour.h:540 net/ipv4/ip_output.c:235) __ip_queue_xmit (net/ipv4/ip_output.c:535) __tcp_transmit_skb (net/ipv4/tcp_output.c:1462) tcp_rcv_synsent_state_process (net/ipv4/tcp_input.c:6469) tcp_rcv_state_process (net/ipv4/tcp_input.c:6657) tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1929) __release_sock (./include/net/sock.h:1121 net/core/sock.c:2968) release_sock (net/core/sock.c:3536) inet_wait_for_connect (net/ipv4/af_inet.c:609) __inet_stream_connect (net/ipv4/af_inet.c:702) inet_stream_connect (net/ipv4/af_inet.c:748) __sys_connect (./include/linux/file.h:45 net/socket.c:2064) __x64_sys_connect (net/socket.c:2073 net/socket.c:2070 net/socket.c:2070) do_syscall_64 (arch/x86/entry/common.c:51 arch/x86/entry/common.c:82) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) RIP: 0033:0x7fa10ff05a3d Code: 5b 41 5c c3 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d ab a3 0e 00 f7 d8 64 89 01 48 RSP: 002b:00007fa110183de8 EFLAGS: 00000202 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 0000000020000054 RCX: 00007fa10ff05a3d RDX: 000000000000001c RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00007fa110183e20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 00007fa110184640 R13: 0000000000000000 R14: 00007fa10fe8b060 R15: 00007fff73e23b20 </TASK> The issue triggering process is analyzed as follows: Thread A Thread B tcp_v4_rcv //receive ack TCP packet inet_shutdown tcp_check_reqtcp_disconnect //disconnect sock ...tcp_set_state(sk, TCP_CLOSE) inet_csk_complete_hashdance... inet_csk_reqsk_queue_add ---truncated--- Solution(s) huawei-euleros-2_0_sp12-upgrade-bpftool huawei-euleros-2_0_sp12-upgrade-kernel huawei-euleros-2_0_sp12-upgrade-kernel-abi-stablelists huawei-euleros-2_0_sp12-upgrade-kernel-tools huawei-euleros-2_0_sp12-upgrade-kernel-tools-libs huawei-euleros-2_0_sp12-upgrade-python3-perf References https://attackerkb.com/topics/cve-2024-26614 CVE - 2024-26614 EulerOS-SA-2024-1873

Ubuntu: (Multiple Advisories) (CVE-2024-26620): Linux kernel vulnerabilities Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 03/11/2024 Created 05/18/2024 Added 05/17/2024 Modified 11/15/2024 Description In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: always filter entire AP matrix The vfio_ap_mdev_filter_matrix function is called whenever a new adapter or domain is assigned to the mdev. The purpose of the function is to update the guest's AP configuration by filtering the matrix of adapters and domains assigned to the mdev. When an adapter or domain is assigned, only the APQNs associated with the APID of the new adapter or APQI of the new domain are inspected. If an APQN does not reference a queue device bound to the vfio_ap device driver, then it's APID will be filtered from the mdev's matrix when updating the guest's AP configuration. Inspecting only the APID of the new adapter or APQI of the new domain will result in passing AP queues through to a guest that are not bound to the vfio_ap device driver under certain circumstances. Consider the following: guest's AP configuration (all also assigned to the mdev's matrix): 14.0004 14.0005 14.0006 16.0004 16.0005 16.0006 unassign domain 4 unbind queue 16.0005 assign domain 4 When domain 4 is re-assigned, since only domain 4 will be inspected, the APQNs that will be examined will be: 14.0004 16.0004 Since both of those APQNs reference queue devices that are bound to the vfio_ap device driver, nothing will get filtered from the mdev's matrix when updating the guest's AP configuration. Consequently, queue 16.0005 will get passed through despite not being bound to the driver. This violates the linux device model requirement that a guest shall only be given access to devices bound to the device driver facilitating their pass-through. To resolve this problem, every adapter and domain assigned to the mdev will be inspected when filtering the mdev's matrix. Solution(s) ubuntu-upgrade-linux-image-6-5-0-1015-starfive ubuntu-upgrade-linux-image-6-5-0-1017-laptop ubuntu-upgrade-linux-image-6-5-0-1018-raspi ubuntu-upgrade-linux-image-6-5-0-1021-aws ubuntu-upgrade-linux-image-6-5-0-1021-nvidia ubuntu-upgrade-linux-image-6-5-0-1021-nvidia-64k ubuntu-upgrade-linux-image-6-5-0-1022-azure ubuntu-upgrade-linux-image-6-5-0-1022-azure-fde ubuntu-upgrade-linux-image-6-5-0-1022-gcp ubuntu-upgrade-linux-image-6-5-0-1024-oem ubuntu-upgrade-linux-image-6-5-0-1024-oracle ubuntu-upgrade-linux-image-6-5-0-1024-oracle-64k ubuntu-upgrade-linux-image-6-5-0-41-generic ubuntu-upgrade-linux-image-6-5-0-41-generic-64k ubuntu-upgrade-linux-image-6-5-0-41-lowlatency ubuntu-upgrade-linux-image-6-5-0-41-lowlatency-64k ubuntu-upgrade-linux-image-aws ubuntu-upgrade-linux-image-azure ubuntu-upgrade-linux-image-azure-fde ubuntu-upgrade-linux-image-gcp ubuntu-upgrade-linux-image-generic ubuntu-upgrade-linux-image-generic-64k ubuntu-upgrade-linux-image-generic-64k-hwe-22-04 ubuntu-upgrade-linux-image-generic-hwe-22-04 ubuntu-upgrade-linux-image-generic-lpae ubuntu-upgrade-linux-image-kvm ubuntu-upgrade-linux-image-laptop-23-10 ubuntu-upgrade-linux-image-lowlatency ubuntu-upgrade-linux-image-lowlatency-64k ubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04 ubuntu-upgrade-linux-image-lowlatency-hwe-22-04 ubuntu-upgrade-linux-image-nvidia-6-5 ubuntu-upgrade-linux-image-nvidia-64k-6-5 ubuntu-upgrade-linux-image-nvidia-64k-hwe-22-04 ubuntu-upgrade-linux-image-nvidia-hwe-22-04 ubuntu-upgrade-linux-image-oem-22-04 ubuntu-upgrade-linux-image-oem-22-04a ubuntu-upgrade-linux-image-oem-22-04b ubuntu-upgrade-linux-image-oem-22-04c ubuntu-upgrade-linux-image-oem-22-04d ubuntu-upgrade-linux-image-oracle ubuntu-upgrade-linux-image-oracle-64k ubuntu-upgrade-linux-image-raspi ubuntu-upgrade-linux-image-raspi-nolpae ubuntu-upgrade-linux-image-starfive ubuntu-upgrade-linux-image-virtual ubuntu-upgrade-linux-image-virtual-hwe-22-04 References https://attackerkb.com/topics/cve-2024-26620 CVE - 2024-26620 USN-6765-1 USN-6818-1 USN-6818-2 USN-6818-3 USN-6818-4 USN-6819-1 USN-6819-2 USN-6819-3 USN-6819-4 View more

Huawei EulerOS: CVE-2023-52486: kernel security update Severity 5 CVSS (AV:L/AC:L/Au:S/C:N/I:N/A:C) Published 03/11/2024 Created 07/17/2024 Added 07/17/2024 Modified 01/30/2025 Description In the Linux kernel, the following vulnerability has been resolved: drm: Don't unref the same fb many times by mistake due to deadlock handling If we get a deadlock after the fb lookup in drm_mode_page_flip_ioctl() we proceed to unref the fb and then retry the whole thing from the top. But we forget to reset the fb pointer back to NULL, and so if we then get another error during the retry, before the fb lookup, we proceed the unref the same fb again without having gotten another reference. The end result is that the fb will (eventually) end up being freed while it's still in use. Reset fb to NULL once we've unreffed it to avoid doing it again until we've done another fb lookup. This turned out to be pretty easy to hit on a DG2 when doing async flips (and CONFIG_DEBUG_WW_MUTEX_SLOWPATH=y). The first symptom I saw that drm_closefb() simply got stuck in a busy loop while walking the framebuffer list. Fortunately I was able to convince it to oops instead, and from there it was easier to track down the culprit. Solution(s) huawei-euleros-2_0_sp9-upgrade-kernel huawei-euleros-2_0_sp9-upgrade-kernel-tools huawei-euleros-2_0_sp9-upgrade-kernel-tools-libs huawei-euleros-2_0_sp9-upgrade-python3-perf References https://attackerkb.com/topics/cve-2023-52486 CVE - 2023-52486 EulerOS-SA-2024-1964

Ubuntu: (Multiple Advisories) (CVE-2024-26615): Linux kernel vulnerabilities Severity 5 CVSS (AV:L/AC:L/Au:S/C:N/I:N/A:C) Published 03/11/2024 Created 05/18/2024 Added 05/17/2024 Modified 01/30/2025 Description In the Linux kernel, the following vulnerability has been resolved: net/smc: fix illegal rmb_desc access in SMC-D connection dump A crash was found when dumping SMC-D connections. It can be reproduced by following steps: - run nginx/wrk test: smc_run nginx smc_run wrk -t 16 -c 1000 -d <duration> -H 'Connection: Close' <URL> - continuously dump SMC-D connections in parallel: watch -n 1 'smcss -D' BUG: kernel NULL pointer dereference, address: 0000000000000030 CPU: 2 PID: 7204 Comm: smcss Kdump: loaded Tainted: G E6.7.0+ #55 RIP: 0010:__smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag] Call Trace: <TASK> ? __die+0x24/0x70 ? page_fault_oops+0x66/0x150 ? exc_page_fault+0x69/0x140 ? asm_exc_page_fault+0x26/0x30 ? __smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag] ? __kmalloc_node_track_caller+0x35d/0x430 ? __alloc_skb+0x77/0x170 smc_diag_dump_proto+0xd0/0xf0 [smc_diag] smc_diag_dump+0x26/0x60 [smc_diag] netlink_dump+0x19f/0x320 __netlink_dump_start+0x1dc/0x300 smc_diag_handler_dump+0x6a/0x80 [smc_diag] ? __pfx_smc_diag_dump+0x10/0x10 [smc_diag] sock_diag_rcv_msg+0x121/0x140 ? __pfx_sock_diag_rcv_msg+0x10/0x10 netlink_rcv_skb+0x5a/0x110 sock_diag_rcv+0x28/0x40 netlink_unicast+0x22a/0x330 netlink_sendmsg+0x1f8/0x420 __sock_sendmsg+0xb0/0xc0 ____sys_sendmsg+0x24e/0x300 ? copy_msghdr_from_user+0x62/0x80 ___sys_sendmsg+0x7c/0xd0 ? __do_fault+0x34/0x160 ? do_read_fault+0x5f/0x100 ? do_fault+0xb0/0x110 ? __handle_mm_fault+0x2b0/0x6c0 __sys_sendmsg+0x4d/0x80 do_syscall_64+0x69/0x180 entry_SYSCALL_64_after_hwframe+0x6e/0x76 It is possible that the connection is in process of being established when we dump it. Assumed that the connection has been registered in a link group by smc_conn_create() but the rmb_desc has not yet been initialized by smc_buf_create(), thus causing the illegal access to conn->rmb_desc. So fix it by checking before dump. Solution(s) ubuntu-upgrade-linux-image-5-15-0-1044-gkeop ubuntu-upgrade-linux-image-5-15-0-1054-ibm ubuntu-upgrade-linux-image-5-15-0-1054-nvidia ubuntu-upgrade-linux-image-5-15-0-1054-nvidia-lowlatency ubuntu-upgrade-linux-image-5-15-0-1054-raspi ubuntu-upgrade-linux-image-5-15-0-1057-intel-iotg ubuntu-upgrade-linux-image-5-15-0-1058-gke ubuntu-upgrade-linux-image-5-15-0-1058-intel-iotg ubuntu-upgrade-linux-image-5-15-0-1058-kvm ubuntu-upgrade-linux-image-5-15-0-1059-gcp ubuntu-upgrade-linux-image-5-15-0-1059-oracle ubuntu-upgrade-linux-image-5-15-0-106-generic ubuntu-upgrade-linux-image-5-15-0-106-generic-64k ubuntu-upgrade-linux-image-5-15-0-106-generic-lpae ubuntu-upgrade-linux-image-5-15-0-106-lowlatency ubuntu-upgrade-linux-image-5-15-0-106-lowlatency-64k ubuntu-upgrade-linux-image-5-15-0-1061-aws ubuntu-upgrade-linux-image-5-15-0-1063-azure ubuntu-upgrade-linux-image-5-15-0-1063-azure-fde ubuntu-upgrade-linux-image-5-4-0-1036-iot ubuntu-upgrade-linux-image-5-4-0-1043-xilinx-zynqmp ubuntu-upgrade-linux-image-5-4-0-1071-ibm ubuntu-upgrade-linux-image-5-4-0-1084-bluefield ubuntu-upgrade-linux-image-5-4-0-1091-gkeop ubuntu-upgrade-linux-image-5-4-0-1108-raspi ubuntu-upgrade-linux-image-5-4-0-1112-kvm ubuntu-upgrade-linux-image-5-4-0-1123-oracle ubuntu-upgrade-linux-image-5-4-0-1124-aws ubuntu-upgrade-linux-image-5-4-0-1128-gcp ubuntu-upgrade-linux-image-5-4-0-1129-azure ubuntu-upgrade-linux-image-5-4-0-181-generic ubuntu-upgrade-linux-image-5-4-0-181-generic-lpae ubuntu-upgrade-linux-image-5-4-0-181-lowlatency ubuntu-upgrade-linux-image-6-5-0-1015-starfive ubuntu-upgrade-linux-image-6-5-0-1017-laptop ubuntu-upgrade-linux-image-6-5-0-1018-raspi ubuntu-upgrade-linux-image-6-5-0-1021-aws ubuntu-upgrade-linux-image-6-5-0-1021-nvidia ubuntu-upgrade-linux-image-6-5-0-1021-nvidia-64k ubuntu-upgrade-linux-image-6-5-0-1022-azure ubuntu-upgrade-linux-image-6-5-0-1022-azure-fde ubuntu-upgrade-linux-image-6-5-0-1022-gcp ubuntu-upgrade-linux-image-6-5-0-1024-oem ubuntu-upgrade-linux-image-6-5-0-1024-oracle ubuntu-upgrade-linux-image-6-5-0-1024-oracle-64k ubuntu-upgrade-linux-image-6-5-0-41-generic ubuntu-upgrade-linux-image-6-5-0-41-generic-64k ubuntu-upgrade-linux-image-6-5-0-41-lowlatency ubuntu-upgrade-linux-image-6-5-0-41-lowlatency-64k ubuntu-upgrade-linux-image-aws ubuntu-upgrade-linux-image-aws-lts-20-04 ubuntu-upgrade-linux-image-aws-lts-22-04 ubuntu-upgrade-linux-image-azure ubuntu-upgrade-linux-image-azure-cvm ubuntu-upgrade-linux-image-azure-fde ubuntu-upgrade-linux-image-azure-fde-lts-22-04 ubuntu-upgrade-linux-image-azure-lts-20-04 ubuntu-upgrade-linux-image-azure-lts-22-04 ubuntu-upgrade-linux-image-bluefield ubuntu-upgrade-linux-image-gcp ubuntu-upgrade-linux-image-gcp-lts-20-04 ubuntu-upgrade-linux-image-gcp-lts-22-04 ubuntu-upgrade-linux-image-generic ubuntu-upgrade-linux-image-generic-64k ubuntu-upgrade-linux-image-generic-64k-hwe-20-04 ubuntu-upgrade-linux-image-generic-64k-hwe-22-04 ubuntu-upgrade-linux-image-generic-hwe-18-04 ubuntu-upgrade-linux-image-generic-hwe-20-04 ubuntu-upgrade-linux-image-generic-hwe-22-04 ubuntu-upgrade-linux-image-generic-lpae ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04 ubuntu-upgrade-linux-image-gke ubuntu-upgrade-linux-image-gke-5-15 ubuntu-upgrade-linux-image-gkeop ubuntu-upgrade-linux-image-gkeop-5-15 ubuntu-upgrade-linux-image-gkeop-5-4 ubuntu-upgrade-linux-image-ibm ubuntu-upgrade-linux-image-ibm-lts-20-04 ubuntu-upgrade-linux-image-intel ubuntu-upgrade-linux-image-intel-iotg ubuntu-upgrade-linux-image-kvm ubuntu-upgrade-linux-image-laptop-23-10 ubuntu-upgrade-linux-image-lowlatency ubuntu-upgrade-linux-image-lowlatency-64k ubuntu-upgrade-linux-image-lowlatency-64k-hwe-20-04 ubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04 ubuntu-upgrade-linux-image-lowlatency-hwe-18-04 ubuntu-upgrade-linux-image-lowlatency-hwe-20-04 ubuntu-upgrade-linux-image-lowlatency-hwe-22-04 ubuntu-upgrade-linux-image-nvidia ubuntu-upgrade-linux-image-nvidia-6-5 ubuntu-upgrade-linux-image-nvidia-64k-6-5 ubuntu-upgrade-linux-image-nvidia-64k-hwe-22-04 ubuntu-upgrade-linux-image-nvidia-hwe-22-04 ubuntu-upgrade-linux-image-nvidia-lowlatency ubuntu-upgrade-linux-image-oem ubuntu-upgrade-linux-image-oem-20-04 ubuntu-upgrade-linux-image-oem-20-04b ubuntu-upgrade-linux-image-oem-20-04c ubuntu-upgrade-linux-image-oem-20-04d ubuntu-upgrade-linux-image-oem-22-04 ubuntu-upgrade-linux-image-oem-22-04a ubuntu-upgrade-linux-image-oem-22-04b ubuntu-upgrade-linux-image-oem-22-04c ubuntu-upgrade-linux-image-oem-22-04d ubuntu-upgrade-linux-image-oem-osp1 ubuntu-upgrade-linux-image-oracle ubuntu-upgrade-linux-image-oracle-64k ubuntu-upgrade-linux-image-oracle-lts-20-04 ubuntu-upgrade-linux-image-oracle-lts-22-04 ubuntu-upgrade-linux-image-raspi ubuntu-upgrade-linux-image-raspi-hwe-18-04 ubuntu-upgrade-linux-image-raspi-nolpae ubuntu-upgrade-linux-image-raspi2 ubuntu-upgrade-linux-image-snapdragon-hwe-18-04 ubuntu-upgrade-linux-image-starfive ubuntu-upgrade-linux-image-virtual ubuntu-upgrade-linux-image-virtual-hwe-18-04 ubuntu-upgrade-linux-image-virtual-hwe-20-04 ubuntu-upgrade-linux-image-virtual-hwe-22-04 ubuntu-upgrade-linux-image-xilinx-zynqmp References https://attackerkb.com/topics/cve-2024-26615 CVE - 2024-26615 USN-6765-1 USN-6766-1 USN-6766-2 USN-6766-3 USN-6767-1 USN-6767-2 USN-6795-1 USN-6818-1 USN-6818-2 USN-6818-3 USN-6818-4 USN-6819-1 USN-6819-2 USN-6819-3 USN-6819-4 USN-6828-1 View more

Red Hat: CVE-2023-52492: kernel: dmaengine: fix NULL pointer in channel unregistration function (Multiple Advisories) Severity 4 CVSS (AV:L/AC:L/Au:M/C:N/I:N/A:C) Published 03/11/2024 Created 11/07/2024 Added 11/06/2024 Modified 12/05/2024 Description In the Linux kernel, the following vulnerability has been resolved: dmaengine: fix NULL pointer in channel unregistration function __dma_async_device_channel_register() can fail. In case of failure, chan->local is freed (with free_percpu()), and chan->local is nullified. When dma_async_device_unregister() is called (because of managed API or intentionally by DMA controller driver), channels are unconditionally unregistered, leading to this NULL pointer: [1.318693] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000d0 [...] [1.484499] Call trace: [1.486930]device_del+0x40/0x394 [1.490314]device_unregister+0x20/0x7c [1.494220]__dma_async_device_channel_unregister+0x68/0xc0 Look at dma_async_device_register() function error path, channel device unregistration is done only if chan->local is not NULL. Then add the same condition at the beginning of __dma_async_device_channel_unregister() function, to avoid NULL pointer issue whatever the API used to reach this function. Solution(s) redhat-upgrade-kernel redhat-upgrade-kernel-rt References CVE-2023-52492 RHSA-2024:8856 RHSA-2024:8870 RHSA-2024:9315

Ubuntu: USN-6694-1 (CVE-2024-28757): Expat vulnerabilities Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 03/10/2024 Created 03/16/2024 Added 03/15/2024 Modified 10/23/2024 Description libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate). Solution(s) ubuntu-upgrade-expat ubuntu-upgrade-libexpat1 References https://attackerkb.com/topics/cve-2024-28757 CVE - 2024-28757 USN-6694-1

Oracle Linux: CVE-2024-28757: ELSA-2024-1530:expat security update (MODERATE) (Multiple Advisories) Severity 8 CVSS (AV:N/AC:L/Au:N/C:N/I:N/A:C) Published 03/10/2024 Created 05/22/2024 Added 03/27/2024 Modified 11/29/2024 Description libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate). An XML Entity Expansion flaw was found in libexpat. This flaw allows an attacker to cause a denial of service when there is an isolated use of external parsers. Solution(s) oracle-linux-upgrade-expat oracle-linux-upgrade-expat-devel References https://attackerkb.com/topics/cve-2024-28757 CVE - 2024-28757 ELSA-2024-1530

Huawei EulerOS: CVE-2024-28757: expat security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 03/10/2024 Created 07/16/2024 Added 07/16/2024 Modified 12/12/2024 Description libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate). Solution(s) huawei-euleros-2_0_sp10-upgrade-expat References https://attackerkb.com/topics/cve-2024-28757 CVE - 2024-28757 EulerOS-SA-2024-1905

Huawei EulerOS: CVE-2024-28757: expat security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 03/10/2024 Created 10/09/2024 Added 10/08/2024 Modified 10/14/2024 Description libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate). Solution(s) huawei-euleros-2_0_sp12-upgrade-expat References https://attackerkb.com/topics/cve-2024-28757 CVE - 2024-28757 EulerOS-SA-2024-2235

Amazon Linux 2023: CVE-2024-28757: Important priority package update for expat Severity 8 CVSS (AV:N/AC:L/Au:N/C:N/I:N/A:C) Published 03/10/2024 Created 02/14/2025 Added 02/14/2025 Modified 02/14/2025 Description libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate). An XML Entity Expansion flaw was found in libexpat. This flaw allows an attacker to cause a denial of service when there is an isolated use of external parsers. Solution(s) amazon-linux-2023-upgrade-expat amazon-linux-2023-upgrade-expat-debuginfo amazon-linux-2023-upgrade-expat-debugsource amazon-linux-2023-upgrade-expat-devel amazon-linux-2023-upgrade-expat-static References https://attackerkb.com/topics/cve-2024-28757 CVE - 2024-28757 https://alas.aws.amazon.com/AL2023/ALAS-2024-576.html

F5 Networks: CVE-2024-28757: K000139637: Expat vulnerability CVE-2024-28757 Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 03/10/2024 Created 05/21/2024 Added 05/20/2024 Modified 07/30/2024 Description libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate). Solution(s) f5-big-ip-upgrade-latest References https://attackerkb.com/topics/cve-2024-28757 CVE - 2024-28757 https://my.f5.com/manage/s/article/K000139637

VMware Photon OS: CVE-2024-2314 Severity 1 CVSS (AV:L/AC:H/Au:S/C:N/I:N/A:P) Published 03/10/2024 Created 01/21/2025 Added 01/20/2025 Modified 02/04/2025 Description If kernel headers need to be extracted, bcc will attempt to load them from a temporary directory. An unprivileged attacker could use this to force bcc to load compromised linux headers. Linux distributions which provide kernel headers by default are not affected by default. Solution(s) vmware-photon_os_update_tdnf References https://attackerkb.com/topics/cve-2024-2314 CVE - 2024-2314

Oracle Linux: CVE-2024-2313: ELSA-2024-8830:bpftrace security update (LOW) (Multiple Advisories) Severity 1 CVSS (AV:L/AC:H/Au:S/C:N/I:N/A:P) Published 03/10/2024 Created 11/13/2024 Added 11/11/2024 Modified 12/06/2024 Description If kernel headers need to be extracted, bpftrace will attempt to load them from a temporary directory. An unprivileged attacker could use this to force bcc to load compromised linux headers. Linux distributions which provide kernel headers by default are not affected by default. A flaw was found in BPFtrace. This issue occurs when extracting kernel headers, it tries to load them from a temporary directory. This issue could allow an attacker to force bpftrace to load compromised Linux headers by placing malicious headers in the temporary directory, leading to potential security risks, unauthorized access, or system compromise. Solution(s) oracle-linux-upgrade-bpftrace References https://attackerkb.com/topics/cve-2024-2313 CVE - 2024-2313 ELSA-2024-8830 ELSA-2024-9188

IBM AIX: python_advisory9 (CVE-2024-28757): Vulnerability in python affects AIX Severity 1 CVSS (AV:N/AC:L/Au:N/C:N/I:N/A:N) Published 03/10/2024 Created 06/14/2024 Added 06/14/2024 Modified 10/31/2024 Description libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate). Solution(s) ibm-aix-python_advisory9 References https://attackerkb.com/topics/cve-2024-28757 CVE - 2024-28757 https://aix.software.ibm.com/aix/efixes/security/python_advisory9.asc

Amazon Linux AMI 2: CVE-2024-2314: Security patch for bcc (ALAS-2024-2551) Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 03/10/2024 Created 06/01/2024 Added 05/31/2024 Modified 05/31/2024 Description If kernel headers need to be extracted, bcc will attempt to load them from a temporary directory. An unprivileged attacker could use this to force bcc to load compromised linux headers. Linux distributions which provide kernel headers by default are not affected by default. Solution(s) amazon-linux-ami-2-upgrade-bcc amazon-linux-ami-2-upgrade-bcc-debuginfo amazon-linux-ami-2-upgrade-bcc-devel amazon-linux-ami-2-upgrade-bcc-doc amazon-linux-ami-2-upgrade-bcc-tools amazon-linux-ami-2-upgrade-libbpf-tools amazon-linux-ami-2-upgrade-python3-bcc References https://attackerkb.com/topics/cve-2024-2314 AL2/ALAS-2024-2551 CVE - 2024-2314

Ubuntu: (Multiple Advisories) (CVE-2024-26618): Linux kernel vulnerabilities Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 03/11/2024 Created 05/18/2024 Added 05/17/2024 Modified 11/15/2024 Description In the Linux kernel, the following vulnerability has been resolved: arm64/sme: Always exit sme_alloc() early with existing storage When sme_alloc() is called with existing storage and we are not flushing we will always allocate new storage, both leaking the existing storage and corrupting the state. Fix this by separating the checks for flushing and for existing storage as we do for SVE. Callers that reallocate (eg, due to changing the vector length) should call sme_free() themselves. Solution(s) ubuntu-upgrade-linux-image-6-5-0-1015-starfive ubuntu-upgrade-linux-image-6-5-0-1017-laptop ubuntu-upgrade-linux-image-6-5-0-1018-raspi ubuntu-upgrade-linux-image-6-5-0-1021-aws ubuntu-upgrade-linux-image-6-5-0-1021-nvidia ubuntu-upgrade-linux-image-6-5-0-1021-nvidia-64k ubuntu-upgrade-linux-image-6-5-0-1022-azure ubuntu-upgrade-linux-image-6-5-0-1022-azure-fde ubuntu-upgrade-linux-image-6-5-0-1022-gcp ubuntu-upgrade-linux-image-6-5-0-1024-oem ubuntu-upgrade-linux-image-6-5-0-1024-oracle ubuntu-upgrade-linux-image-6-5-0-1024-oracle-64k ubuntu-upgrade-linux-image-6-5-0-41-generic ubuntu-upgrade-linux-image-6-5-0-41-generic-64k ubuntu-upgrade-linux-image-6-5-0-41-lowlatency ubuntu-upgrade-linux-image-6-5-0-41-lowlatency-64k ubuntu-upgrade-linux-image-aws ubuntu-upgrade-linux-image-azure ubuntu-upgrade-linux-image-azure-fde ubuntu-upgrade-linux-image-gcp ubuntu-upgrade-linux-image-generic ubuntu-upgrade-linux-image-generic-64k ubuntu-upgrade-linux-image-generic-64k-hwe-22-04 ubuntu-upgrade-linux-image-generic-hwe-22-04 ubuntu-upgrade-linux-image-generic-lpae ubuntu-upgrade-linux-image-kvm ubuntu-upgrade-linux-image-laptop-23-10 ubuntu-upgrade-linux-image-lowlatency ubuntu-upgrade-linux-image-lowlatency-64k ubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04 ubuntu-upgrade-linux-image-lowlatency-hwe-22-04 ubuntu-upgrade-linux-image-nvidia-6-5 ubuntu-upgrade-linux-image-nvidia-64k-6-5 ubuntu-upgrade-linux-image-nvidia-64k-hwe-22-04 ubuntu-upgrade-linux-image-nvidia-hwe-22-04 ubuntu-upgrade-linux-image-oem-22-04 ubuntu-upgrade-linux-image-oem-22-04a ubuntu-upgrade-linux-image-oem-22-04b ubuntu-upgrade-linux-image-oem-22-04c ubuntu-upgrade-linux-image-oem-22-04d ubuntu-upgrade-linux-image-oracle ubuntu-upgrade-linux-image-oracle-64k ubuntu-upgrade-linux-image-raspi ubuntu-upgrade-linux-image-raspi-nolpae ubuntu-upgrade-linux-image-starfive ubuntu-upgrade-linux-image-virtual ubuntu-upgrade-linux-image-virtual-hwe-22-04 References https://attackerkb.com/topics/cve-2024-26618 CVE - 2024-26618 USN-6765-1 USN-6818-1 USN-6818-2 USN-6818-3 USN-6818-4 USN-6819-1 USN-6819-2 USN-6819-3 USN-6819-4 View more

Ubuntu: (Multiple Advisories) (CVE-2023-52495): Linux kernel vulnerabilities Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 03/11/2024 Created 05/18/2024 Added 05/17/2024 Modified 11/15/2024 Description In the Linux kernel, the following vulnerability has been resolved: soc: qcom: pmic_glink_altmode: fix port sanity check The PMIC GLINK altmode driver currently supports at most two ports. Fix the incomplete port sanity check on notifications to avoid accessing and corrupting memory beyond the port array if we ever get a notification for an unsupported port. Solution(s) ubuntu-upgrade-linux-image-6-5-0-1015-starfive ubuntu-upgrade-linux-image-6-5-0-1017-laptop ubuntu-upgrade-linux-image-6-5-0-1018-raspi ubuntu-upgrade-linux-image-6-5-0-1021-aws ubuntu-upgrade-linux-image-6-5-0-1021-nvidia ubuntu-upgrade-linux-image-6-5-0-1021-nvidia-64k ubuntu-upgrade-linux-image-6-5-0-1022-azure ubuntu-upgrade-linux-image-6-5-0-1022-azure-fde ubuntu-upgrade-linux-image-6-5-0-1022-gcp ubuntu-upgrade-linux-image-6-5-0-1024-oem ubuntu-upgrade-linux-image-6-5-0-1024-oracle ubuntu-upgrade-linux-image-6-5-0-1024-oracle-64k ubuntu-upgrade-linux-image-6-5-0-41-generic ubuntu-upgrade-linux-image-6-5-0-41-generic-64k ubuntu-upgrade-linux-image-6-5-0-41-lowlatency ubuntu-upgrade-linux-image-6-5-0-41-lowlatency-64k ubuntu-upgrade-linux-image-aws ubuntu-upgrade-linux-image-azure ubuntu-upgrade-linux-image-azure-fde ubuntu-upgrade-linux-image-gcp ubuntu-upgrade-linux-image-generic ubuntu-upgrade-linux-image-generic-64k ubuntu-upgrade-linux-image-generic-64k-hwe-22-04 ubuntu-upgrade-linux-image-generic-hwe-22-04 ubuntu-upgrade-linux-image-generic-lpae ubuntu-upgrade-linux-image-kvm ubuntu-upgrade-linux-image-laptop-23-10 ubuntu-upgrade-linux-image-lowlatency ubuntu-upgrade-linux-image-lowlatency-64k ubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04 ubuntu-upgrade-linux-image-lowlatency-hwe-22-04 ubuntu-upgrade-linux-image-nvidia-6-5 ubuntu-upgrade-linux-image-nvidia-64k-6-5 ubuntu-upgrade-linux-image-nvidia-64k-hwe-22-04 ubuntu-upgrade-linux-image-nvidia-hwe-22-04 ubuntu-upgrade-linux-image-oem-22-04 ubuntu-upgrade-linux-image-oem-22-04a ubuntu-upgrade-linux-image-oem-22-04b ubuntu-upgrade-linux-image-oem-22-04c ubuntu-upgrade-linux-image-oem-22-04d ubuntu-upgrade-linux-image-oracle ubuntu-upgrade-linux-image-oracle-64k ubuntu-upgrade-linux-image-raspi ubuntu-upgrade-linux-image-raspi-nolpae ubuntu-upgrade-linux-image-starfive ubuntu-upgrade-linux-image-virtual ubuntu-upgrade-linux-image-virtual-hwe-22-04 References https://attackerkb.com/topics/cve-2023-52495 CVE - 2023-52495 USN-6765-1 USN-6818-1 USN-6818-2 USN-6818-3 USN-6818-4 USN-6819-1 USN-6819-2 USN-6819-3 USN-6819-4 View more

Ubuntu: (Multiple Advisories) (CVE-2024-26612): Linux kernel vulnerabilities Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 03/11/2024 Created 05/18/2024 Added 05/17/2024 Modified 11/15/2024 Description In the Linux kernel, the following vulnerability has been resolved: netfs, fscache: Prevent Oops in fscache_put_cache() This function dereferences "cache" and then checks if it's IS_ERR_OR_NULL().Check first, then dereference. Solution(s) ubuntu-upgrade-linux-image-6-5-0-1015-starfive ubuntu-upgrade-linux-image-6-5-0-1017-laptop ubuntu-upgrade-linux-image-6-5-0-1018-raspi ubuntu-upgrade-linux-image-6-5-0-1021-aws ubuntu-upgrade-linux-image-6-5-0-1021-nvidia ubuntu-upgrade-linux-image-6-5-0-1021-nvidia-64k ubuntu-upgrade-linux-image-6-5-0-1022-azure ubuntu-upgrade-linux-image-6-5-0-1022-azure-fde ubuntu-upgrade-linux-image-6-5-0-1022-gcp ubuntu-upgrade-linux-image-6-5-0-1024-oem ubuntu-upgrade-linux-image-6-5-0-1024-oracle ubuntu-upgrade-linux-image-6-5-0-1024-oracle-64k ubuntu-upgrade-linux-image-6-5-0-41-generic ubuntu-upgrade-linux-image-6-5-0-41-generic-64k ubuntu-upgrade-linux-image-6-5-0-41-lowlatency ubuntu-upgrade-linux-image-6-5-0-41-lowlatency-64k ubuntu-upgrade-linux-image-aws ubuntu-upgrade-linux-image-azure ubuntu-upgrade-linux-image-azure-fde ubuntu-upgrade-linux-image-gcp ubuntu-upgrade-linux-image-generic ubuntu-upgrade-linux-image-generic-64k ubuntu-upgrade-linux-image-generic-64k-hwe-22-04 ubuntu-upgrade-linux-image-generic-hwe-22-04 ubuntu-upgrade-linux-image-generic-lpae ubuntu-upgrade-linux-image-kvm ubuntu-upgrade-linux-image-laptop-23-10 ubuntu-upgrade-linux-image-lowlatency ubuntu-upgrade-linux-image-lowlatency-64k ubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04 ubuntu-upgrade-linux-image-lowlatency-hwe-22-04 ubuntu-upgrade-linux-image-nvidia-6-5 ubuntu-upgrade-linux-image-nvidia-64k-6-5 ubuntu-upgrade-linux-image-nvidia-64k-hwe-22-04 ubuntu-upgrade-linux-image-nvidia-hwe-22-04 ubuntu-upgrade-linux-image-oem-22-04 ubuntu-upgrade-linux-image-oem-22-04a ubuntu-upgrade-linux-image-oem-22-04b ubuntu-upgrade-linux-image-oem-22-04c ubuntu-upgrade-linux-image-oem-22-04d ubuntu-upgrade-linux-image-oracle ubuntu-upgrade-linux-image-oracle-64k ubuntu-upgrade-linux-image-raspi ubuntu-upgrade-linux-image-raspi-nolpae ubuntu-upgrade-linux-image-starfive ubuntu-upgrade-linux-image-virtual ubuntu-upgrade-linux-image-virtual-hwe-22-04 References https://attackerkb.com/topics/cve-2024-26612 CVE - 2024-26612 USN-6765-1 USN-6818-1 USN-6818-2 USN-6818-3 USN-6818-4 USN-6819-1 USN-6819-2 USN-6819-3 USN-6819-4 View more

Ubuntu: (Multiple Advisories) (CVE-2023-52489): Linux kernel vulnerabilities Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 03/11/2024 Created 05/18/2024 Added 05/17/2024 Modified 11/15/2024 Description In the Linux kernel, the following vulnerability has been resolved: mm/sparsemem: fix race in accessing memory_section->usage The below race is observed on a PFN which falls into the device memory region with the system memory configuration where PFN's are such that [ZONE_NORMAL ZONE_DEVICE ZONE_NORMAL].Since normal zone start and end pfn contains the device memory PFN's as well, the compaction triggered will try on the device memory PFN's too though they end up in NOP(because pfn_to_online_page() returns NULL for ZONE_DEVICE memory sections).When from other core, the section mappings are being removed for the ZONE_DEVICE region, that the PFN in question belongs to, on which compaction is currently being operated is resulting into the kernel crash with CONFIG_SPASEMEM_VMEMAP enabled.The crash logs can be seen at [1]. compact_zone() memunmap_pages ------------- --------------- __pageblock_pfn_to_page ...... (a)pfn_valid(): valid_section()//return true (b)__remove_pages()-> sparse_remove_section()-> section_deactivate(): [Free the array ms->usage and set ms->usage = NULL] pfn_section_valid() [Access ms->usage which is NULL] NOTE: From the above it can be said that the race is reduced to between the pfn_valid()/pfn_section_valid() and the section deactivate with SPASEMEM_VMEMAP enabled. The commit b943f045a9af("mm/sparse: fix kernel crash with pfn_section_valid check") tried to address the same problem by clearing the SECTION_HAS_MEM_MAP with the expectation of valid_section() returns false thus ms->usage is not accessed. Fix this issue by the below steps: a) Clear SECTION_HAS_MEM_MAP before freeing the ->usage. b) RCU protected read side critical section will either return NULL when SECTION_HAS_MEM_MAP is cleared or can successfully access ->usage. c) Free the ->usage with kfree_rcu() and set ms->usage = NULL.No attempt will be made to access ->usage after this as the SECTION_HAS_MEM_MAP is cleared thus valid_section() return false. Thanks to David/Pavan for their inputs on this patch. [1] https://lore.kernel.org/linux-mm/[email protected]/ On Snapdragon SoC, with the mentioned memory configuration of PFN's as [ZONE_NORMAL ZONE_DEVICE ZONE_NORMAL], we are able to see bunch of issues daily while testing on a device farm. For this particular issue below is the log.Though the below log is not directly pointing to the pfn_section_valid(){ ms->usage;}, when we loaded this dump on T32 lauterbach tool, it is pointing. [540.578056] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [540.578068] Mem abort info: [540.578070] ESR = 0x0000000096000005 [540.578073] EC = 0x25: DABT (current EL), IL = 32 bits [540.578077] SET = 0, FnV = 0 [540.578080] EA = 0, S1PTW = 0 [540.578082] FSC = 0x05: level 1 translation fault [540.578085] Data abort info: [540.578086] ISV = 0, ISS = 0x00000005 [540.578088] CM = 0, WnR = 0 [540.579431] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBSBTYPE=--) [540.579436] pc : __pageblock_pfn_to_page+0x6c/0x14c [540.579454] lr : compact_zone+0x994/0x1058 [540.579460] sp : ffffffc03579b510 [540.579463] x29: ffffffc03579b510 x28: 0000000000235800 x27:000000000000000c [540.579470] x26: 0000000000235c00 x25: 0000000000000068 x24:ffffffc03579b640 [540.579477] x23: 0000000000000001 x22: ffffffc03579b660 x21:0000000000000000 [540.579483] x20: 0000000000235bff x19: ffffffdebf7e3940 x18:ffffffdebf66d140 [540.579489] x17: 00000000739ba063 x16: 00000000739ba063 x15:00000000009f4bff [540.579495] x14: 0000008000000000 x13: 0000000000000000 x12:0000000000000001 [540.579501] x11: 0000000000000000 x10: 0000000000000000 x9 :ffffff897d2cd440 [540.579507] x8 : 0000000000000000 x7 : 0000000000000000 x6 :ffffffc03579b5b4 [540.579512] x5 : 0000000000027f25 x4 : ffffffc03579b5b8 x3 :0000000000000 ---truncated--- Solution(s) ubuntu-upgrade-linux-image-5-15-0-1044-gkeop ubuntu-upgrade-linux-image-5-15-0-1054-ibm ubuntu-upgrade-linux-image-5-15-0-1054-nvidia ubuntu-upgrade-linux-image-5-15-0-1054-nvidia-lowlatency ubuntu-upgrade-linux-image-5-15-0-1054-raspi ubuntu-upgrade-linux-image-5-15-0-1057-intel-iotg ubuntu-upgrade-linux-image-5-15-0-1058-gke ubuntu-upgrade-linux-image-5-15-0-1058-intel-iotg ubuntu-upgrade-linux-image-5-15-0-1058-kvm ubuntu-upgrade-linux-image-5-15-0-1059-gcp ubuntu-upgrade-linux-image-5-15-0-1059-oracle ubuntu-upgrade-linux-image-5-15-0-106-generic ubuntu-upgrade-linux-image-5-15-0-106-generic-64k ubuntu-upgrade-linux-image-5-15-0-106-generic-lpae ubuntu-upgrade-linux-image-5-15-0-106-lowlatency ubuntu-upgrade-linux-image-5-15-0-106-lowlatency-64k ubuntu-upgrade-linux-image-5-15-0-1061-aws ubuntu-upgrade-linux-image-5-15-0-1063-azure ubuntu-upgrade-linux-image-5-15-0-1063-azure-fde ubuntu-upgrade-linux-image-6-5-0-1015-starfive ubuntu-upgrade-linux-image-6-5-0-1017-laptop ubuntu-upgrade-linux-image-6-5-0-1018-raspi ubuntu-upgrade-linux-image-6-5-0-1021-aws ubuntu-upgrade-linux-image-6-5-0-1021-nvidia ubuntu-upgrade-linux-image-6-5-0-1021-nvidia-64k ubuntu-upgrade-linux-image-6-5-0-1022-azure ubuntu-upgrade-linux-image-6-5-0-1022-azure-fde ubuntu-upgrade-linux-image-6-5-0-1022-gcp ubuntu-upgrade-linux-image-6-5-0-1024-oem ubuntu-upgrade-linux-image-6-5-0-1024-oracle ubuntu-upgrade-linux-image-6-5-0-1024-oracle-64k ubuntu-upgrade-linux-image-6-5-0-41-generic ubuntu-upgrade-linux-image-6-5-0-41-generic-64k ubuntu-upgrade-linux-image-6-5-0-41-lowlatency ubuntu-upgrade-linux-image-6-5-0-41-lowlatency-64k ubuntu-upgrade-linux-image-aws ubuntu-upgrade-linux-image-aws-lts-22-04 ubuntu-upgrade-linux-image-azure ubuntu-upgrade-linux-image-azure-cvm ubuntu-upgrade-linux-image-azure-fde ubuntu-upgrade-linux-image-azure-fde-lts-22-04 ubuntu-upgrade-linux-image-azure-lts-22-04 ubuntu-upgrade-linux-image-gcp ubuntu-upgrade-linux-image-gcp-lts-22-04 ubuntu-upgrade-linux-image-generic ubuntu-upgrade-linux-image-generic-64k ubuntu-upgrade-linux-image-generic-64k-hwe-20-04 ubuntu-upgrade-linux-image-generic-64k-hwe-22-04 ubuntu-upgrade-linux-image-generic-hwe-20-04 ubuntu-upgrade-linux-image-generic-hwe-22-04 ubuntu-upgrade-linux-image-generic-lpae ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04 ubuntu-upgrade-linux-image-gke ubuntu-upgrade-linux-image-gke-5-15 ubuntu-upgrade-linux-image-gkeop ubuntu-upgrade-linux-image-gkeop-5-15 ubuntu-upgrade-linux-image-ibm ubuntu-upgrade-linux-image-intel ubuntu-upgrade-linux-image-intel-iotg ubuntu-upgrade-linux-image-kvm ubuntu-upgrade-linux-image-laptop-23-10 ubuntu-upgrade-linux-image-lowlatency ubuntu-upgrade-linux-image-lowlatency-64k ubuntu-upgrade-linux-image-lowlatency-64k-hwe-20-04 ubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04 ubuntu-upgrade-linux-image-lowlatency-hwe-20-04 ubuntu-upgrade-linux-image-lowlatency-hwe-22-04 ubuntu-upgrade-linux-image-nvidia ubuntu-upgrade-linux-image-nvidia-6-5 ubuntu-upgrade-linux-image-nvidia-64k-6-5 ubuntu-upgrade-linux-image-nvidia-64k-hwe-22-04 ubuntu-upgrade-linux-image-nvidia-hwe-22-04 ubuntu-upgrade-linux-image-nvidia-lowlatency ubuntu-upgrade-linux-image-oem-20-04 ubuntu-upgrade-linux-image-oem-20-04b ubuntu-upgrade-linux-image-oem-20-04c ubuntu-upgrade-linux-image-oem-20-04d ubuntu-upgrade-linux-image-oem-22-04 ubuntu-upgrade-linux-image-oem-22-04a ubuntu-upgrade-linux-image-oem-22-04b ubuntu-upgrade-linux-image-oem-22-04c ubuntu-upgrade-linux-image-oem-22-04d ubuntu-upgrade-linux-image-oracle ubuntu-upgrade-linux-image-oracle-64k ubuntu-upgrade-linux-image-oracle-lts-22-04 ubuntu-upgrade-linux-image-raspi ubuntu-upgrade-linux-image-raspi-nolpae ubuntu-upgrade-linux-image-starfive ubuntu-upgrade-linux-image-virtual ubuntu-upgrade-linux-image-virtual-hwe-20-04 ubuntu-upgrade-linux-image-virtual-hwe-22-04 References https://attackerkb.com/topics/cve-2023-52489 CVE - 2023-52489 USN-6765-1 USN-6766-1 USN-6766-2 USN-6766-3 USN-6795-1 USN-6818-1 USN-6818-2 USN-6818-3 USN-6818-4 USN-6819-1 USN-6819-2 USN-6819-3 USN-6819-4 USN-6828-1 View more

Ubuntu: (Multiple Advisories) (CVE-2023-52491): Linux kernel vulnerabilities Severity 7 CVSS (AV:L/AC:L/Au:S/C:C/I:C/A:C) Published 03/11/2024 Created 05/18/2024 Added 05/17/2024 Modified 01/28/2025 Description In the Linux kernel, the following vulnerability has been resolved: media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run In mtk_jpeg_probe, &jpeg->job_timeout_work is bound with mtk_jpeg_job_timeout_work. In mtk_jpeg_dec_device_run, if error happens in mtk_jpeg_set_dec_dst, it will finally start the worker while mark the job as finished by invoking v4l2_m2m_job_finish. There are two methods to trigger the bug. If we remove the module, it which will call mtk_jpeg_remove to make cleanup. The possible sequence is as follows, which will cause a use-after-free bug. CPU0CPU1 mtk_jpeg_dec_...| start worker | |mtk_jpeg_job_timeout_work mtk_jpeg_remove | v4l2_m2m_release| kfree(m2m_dev); | | | v4l2_m2m_get_curr_priv | m2m_dev->curr_ctx //use If we close the file descriptor, which will call mtk_jpeg_release, it will have a similar sequence. Fix this bug by starting timeout worker only if started jpegdec worker successfully. Then v4l2_m2m_job_finish will only be called in either mtk_jpeg_job_timeout_work or mtk_jpeg_dec_device_run. Solution(s) ubuntu-upgrade-linux-image-5-15-0-1044-gkeop ubuntu-upgrade-linux-image-5-15-0-1054-ibm ubuntu-upgrade-linux-image-5-15-0-1054-nvidia ubuntu-upgrade-linux-image-5-15-0-1054-nvidia-lowlatency ubuntu-upgrade-linux-image-5-15-0-1054-raspi ubuntu-upgrade-linux-image-5-15-0-1057-intel-iotg ubuntu-upgrade-linux-image-5-15-0-1058-gke ubuntu-upgrade-linux-image-5-15-0-1058-intel-iotg ubuntu-upgrade-linux-image-5-15-0-1058-kvm ubuntu-upgrade-linux-image-5-15-0-1059-gcp ubuntu-upgrade-linux-image-5-15-0-1059-oracle ubuntu-upgrade-linux-image-5-15-0-106-generic ubuntu-upgrade-linux-image-5-15-0-106-generic-64k ubuntu-upgrade-linux-image-5-15-0-106-generic-lpae ubuntu-upgrade-linux-image-5-15-0-106-lowlatency ubuntu-upgrade-linux-image-5-15-0-106-lowlatency-64k ubuntu-upgrade-linux-image-5-15-0-1061-aws ubuntu-upgrade-linux-image-5-15-0-1063-azure ubuntu-upgrade-linux-image-5-15-0-1063-azure-fde ubuntu-upgrade-linux-image-6-5-0-1015-starfive ubuntu-upgrade-linux-image-6-5-0-1017-laptop ubuntu-upgrade-linux-image-6-5-0-1018-raspi ubuntu-upgrade-linux-image-6-5-0-1021-aws ubuntu-upgrade-linux-image-6-5-0-1021-nvidia ubuntu-upgrade-linux-image-6-5-0-1021-nvidia-64k ubuntu-upgrade-linux-image-6-5-0-1022-azure ubuntu-upgrade-linux-image-6-5-0-1022-azure-fde ubuntu-upgrade-linux-image-6-5-0-1022-gcp ubuntu-upgrade-linux-image-6-5-0-1024-oem ubuntu-upgrade-linux-image-6-5-0-1024-oracle ubuntu-upgrade-linux-image-6-5-0-1024-oracle-64k ubuntu-upgrade-linux-image-6-5-0-41-generic ubuntu-upgrade-linux-image-6-5-0-41-generic-64k ubuntu-upgrade-linux-image-6-5-0-41-lowlatency ubuntu-upgrade-linux-image-6-5-0-41-lowlatency-64k ubuntu-upgrade-linux-image-aws ubuntu-upgrade-linux-image-aws-lts-22-04 ubuntu-upgrade-linux-image-azure ubuntu-upgrade-linux-image-azure-cvm ubuntu-upgrade-linux-image-azure-fde ubuntu-upgrade-linux-image-azure-fde-lts-22-04 ubuntu-upgrade-linux-image-azure-lts-22-04 ubuntu-upgrade-linux-image-gcp ubuntu-upgrade-linux-image-gcp-lts-22-04 ubuntu-upgrade-linux-image-generic ubuntu-upgrade-linux-image-generic-64k ubuntu-upgrade-linux-image-generic-64k-hwe-20-04 ubuntu-upgrade-linux-image-generic-64k-hwe-22-04 ubuntu-upgrade-linux-image-generic-hwe-20-04 ubuntu-upgrade-linux-image-generic-hwe-22-04 ubuntu-upgrade-linux-image-generic-lpae ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04 ubuntu-upgrade-linux-image-gke ubuntu-upgrade-linux-image-gke-5-15 ubuntu-upgrade-linux-image-gkeop ubuntu-upgrade-linux-image-gkeop-5-15 ubuntu-upgrade-linux-image-ibm ubuntu-upgrade-linux-image-intel ubuntu-upgrade-linux-image-intel-iotg ubuntu-upgrade-linux-image-kvm ubuntu-upgrade-linux-image-laptop-23-10 ubuntu-upgrade-linux-image-lowlatency ubuntu-upgrade-linux-image-lowlatency-64k ubuntu-upgrade-linux-image-lowlatency-64k-hwe-20-04 ubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04 ubuntu-upgrade-linux-image-lowlatency-hwe-20-04 ubuntu-upgrade-linux-image-lowlatency-hwe-22-04 ubuntu-upgrade-linux-image-nvidia ubuntu-upgrade-linux-image-nvidia-6-5 ubuntu-upgrade-linux-image-nvidia-64k-6-5 ubuntu-upgrade-linux-image-nvidia-64k-hwe-22-04 ubuntu-upgrade-linux-image-nvidia-hwe-22-04 ubuntu-upgrade-linux-image-nvidia-lowlatency ubuntu-upgrade-linux-image-oem-20-04 ubuntu-upgrade-linux-image-oem-20-04b ubuntu-upgrade-linux-image-oem-20-04c ubuntu-upgrade-linux-image-oem-20-04d ubuntu-upgrade-linux-image-oem-22-04 ubuntu-upgrade-linux-image-oem-22-04a ubuntu-upgrade-linux-image-oem-22-04b ubuntu-upgrade-linux-image-oem-22-04c ubuntu-upgrade-linux-image-oem-22-04d ubuntu-upgrade-linux-image-oracle ubuntu-upgrade-linux-image-oracle-64k ubuntu-upgrade-linux-image-oracle-lts-22-04 ubuntu-upgrade-linux-image-raspi ubuntu-upgrade-linux-image-raspi-nolpae ubuntu-upgrade-linux-image-starfive ubuntu-upgrade-linux-image-virtual ubuntu-upgrade-linux-image-virtual-hwe-20-04 ubuntu-upgrade-linux-image-virtual-hwe-22-04 References https://attackerkb.com/topics/cve-2023-52491 CVE - 2023-52491 USN-6765-1 USN-6766-1 USN-6766-2 USN-6766-3 USN-6795-1 USN-6818-1 USN-6818-2 USN-6818-3 USN-6818-4 USN-6819-1 USN-6819-2 USN-6819-3 USN-6819-4 USN-6828-1 View more

Rocky Linux: CVE-2024-26610: kernel-rt (Multiple Advisories) Severity 7 CVSS (AV:L/AC:L/Au:S/C:C/I:C/A:C) Published 03/11/2024 Created 06/17/2024 Added 06/17/2024 Modified 01/30/2025 Description In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: fix a memory corruption iwl_fw_ini_trigger_tlv::data is a pointer to a __le32, which means that if we copy to iwl_fw_ini_trigger_tlv::data + offset while offset is in bytes, we'll write past the buffer. Solution(s) rocky-upgrade-bpftool rocky-upgrade-bpftool-debuginfo rocky-upgrade-kernel rocky-upgrade-kernel-core rocky-upgrade-kernel-cross-headers rocky-upgrade-kernel-debug rocky-upgrade-kernel-debug-core rocky-upgrade-kernel-debug-debuginfo rocky-upgrade-kernel-debug-devel rocky-upgrade-kernel-debug-modules rocky-upgrade-kernel-debug-modules-extra rocky-upgrade-kernel-debuginfo rocky-upgrade-kernel-debuginfo-common-x86_64 rocky-upgrade-kernel-devel rocky-upgrade-kernel-headers rocky-upgrade-kernel-modules rocky-upgrade-kernel-modules-extra rocky-upgrade-kernel-rt rocky-upgrade-kernel-rt-core rocky-upgrade-kernel-rt-debug rocky-upgrade-kernel-rt-debug-core rocky-upgrade-kernel-rt-debug-debuginfo rocky-upgrade-kernel-rt-debug-devel rocky-upgrade-kernel-rt-debug-kvm rocky-upgrade-kernel-rt-debug-modules rocky-upgrade-kernel-rt-debug-modules-extra rocky-upgrade-kernel-rt-debuginfo rocky-upgrade-kernel-rt-debuginfo-common-x86_64 rocky-upgrade-kernel-rt-devel rocky-upgrade-kernel-rt-kvm rocky-upgrade-kernel-rt-modules rocky-upgrade-kernel-rt-modules-extra rocky-upgrade-kernel-tools rocky-upgrade-kernel-tools-debuginfo rocky-upgrade-kernel-tools-libs rocky-upgrade-kernel-tools-libs-devel rocky-upgrade-perf rocky-upgrade-perf-debuginfo rocky-upgrade-python3-perf rocky-upgrade-python3-perf-debuginfo References https://attackerkb.com/topics/cve-2024-26610 CVE - 2024-26610 https://errata.rockylinux.org/RLSA-2024:3618 https://errata.rockylinux.org/RLSA-2024:3627

Ubuntu: (Multiple Advisories) (CVE-2023-52490): Linux kernel vulnerabilities Severity 5 CVSS (AV:L/AC:L/Au:S/C:N/I:N/A:C) Published 03/11/2024 Created 05/18/2024 Added 05/17/2024 Modified 01/30/2025 Description In the Linux kernel, the following vulnerability has been resolved: mm: migrate: fix getting incorrect page mapping during page migration When running stress-ng testing, we found below kernel crash after a few hours: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 pc : dentry_name+0xd8/0x224 lr : pointer+0x22c/0x370 sp : ffff800025f134c0 ...... Call trace: dentry_name+0xd8/0x224 pointer+0x22c/0x370 vsnprintf+0x1ec/0x730 vscnprintf+0x2c/0x60 vprintk_store+0x70/0x234 vprintk_emit+0xe0/0x24c vprintk_default+0x3c/0x44 vprintk_func+0x84/0x2d0 printk+0x64/0x88 __dump_page+0x52c/0x530 dump_page+0x14/0x20 set_migratetype_isolate+0x110/0x224 start_isolate_page_range+0xc4/0x20c offline_pages+0x124/0x474 memory_block_offline+0x44/0xf4 memory_subsys_offline+0x3c/0x70 device_offline+0xf0/0x120 ...... After analyzing the vmcore, I found this issue is caused by page migration. The scenario is that, one thread is doing page migration, and we will use the target page's ->mapping field to save 'anon_vma' pointer between page unmap and page move, and now the target page is locked and refcount is 1. Currently, there is another stress-ng thread performing memory hotplug, attempting to offline the target page that is being migrated. It discovers that the refcount of this target page is 1, preventing the offline operation, thus proceeding to dump the page. However, page_mapping() of the target page may return an incorrect file mapping to crash the system in dump_mapping(), since the target page->mapping only saves 'anon_vma' pointer without setting PAGE_MAPPING_ANON flag. There are seveval ways to fix this issue: (1) Setting the PAGE_MAPPING_ANON flag for target page's ->mapping when saving 'anon_vma', but this can confuse PageAnon() for PFN walkers, since the target page has not built mappings yet. (2) Getting the page lock to call page_mapping() in __dump_page() to avoid crashing the system, however, there are still some PFN walkers that call page_mapping() without holding the page lock, such as compaction. (3) Using target page->private field to save the 'anon_vma' pointer and 2 bits page state, just as page->mapping records an anonymous page, which can remove the page_mapping() impact for PFN walkers and also seems a simple way. So I choose option 3 to fix this issue, and this can also fix other potential issues for PFN walkers, such as compaction. Solution(s) ubuntu-upgrade-linux-image-6-5-0-1015-starfive ubuntu-upgrade-linux-image-6-5-0-1017-laptop ubuntu-upgrade-linux-image-6-5-0-1018-raspi ubuntu-upgrade-linux-image-6-5-0-1021-aws ubuntu-upgrade-linux-image-6-5-0-1021-nvidia ubuntu-upgrade-linux-image-6-5-0-1021-nvidia-64k ubuntu-upgrade-linux-image-6-5-0-1022-azure ubuntu-upgrade-linux-image-6-5-0-1022-azure-fde ubuntu-upgrade-linux-image-6-5-0-1022-gcp ubuntu-upgrade-linux-image-6-5-0-1024-oem ubuntu-upgrade-linux-image-6-5-0-1024-oracle ubuntu-upgrade-linux-image-6-5-0-1024-oracle-64k ubuntu-upgrade-linux-image-6-5-0-41-generic ubuntu-upgrade-linux-image-6-5-0-41-generic-64k ubuntu-upgrade-linux-image-6-5-0-41-lowlatency ubuntu-upgrade-linux-image-6-5-0-41-lowlatency-64k ubuntu-upgrade-linux-image-aws ubuntu-upgrade-linux-image-azure ubuntu-upgrade-linux-image-azure-fde ubuntu-upgrade-linux-image-gcp ubuntu-upgrade-linux-image-generic ubuntu-upgrade-linux-image-generic-64k ubuntu-upgrade-linux-image-generic-64k-hwe-22-04 ubuntu-upgrade-linux-image-generic-hwe-22-04 ubuntu-upgrade-linux-image-generic-lpae ubuntu-upgrade-linux-image-kvm ubuntu-upgrade-linux-image-laptop-23-10 ubuntu-upgrade-linux-image-lowlatency ubuntu-upgrade-linux-image-lowlatency-64k ubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04 ubuntu-upgrade-linux-image-lowlatency-hwe-22-04 ubuntu-upgrade-linux-image-nvidia-6-5 ubuntu-upgrade-linux-image-nvidia-64k-6-5 ubuntu-upgrade-linux-image-nvidia-64k-hwe-22-04 ubuntu-upgrade-linux-image-nvidia-hwe-22-04 ubuntu-upgrade-linux-image-oem-22-04 ubuntu-upgrade-linux-image-oem-22-04a ubuntu-upgrade-linux-image-oem-22-04b ubuntu-upgrade-linux-image-oem-22-04c ubuntu-upgrade-linux-image-oem-22-04d ubuntu-upgrade-linux-image-oracle ubuntu-upgrade-linux-image-oracle-64k ubuntu-upgrade-linux-image-raspi ubuntu-upgrade-linux-image-raspi-nolpae ubuntu-upgrade-linux-image-starfive ubuntu-upgrade-linux-image-virtual ubuntu-upgrade-linux-image-virtual-hwe-22-04 References https://attackerkb.com/topics/cve-2023-52490 CVE - 2023-52490 USN-6765-1 USN-6818-1 USN-6818-2 USN-6818-3 USN-6818-4 USN-6819-1 USN-6819-2 USN-6819-3 USN-6819-4 View more

Huawei EulerOS: CVE-2023-52498: kernel security update Severity 5 CVSS (AV:L/AC:L/Au:S/C:N/I:N/A:C) Published 03/11/2024 Created 06/26/2024 Added 06/26/2024 Modified 01/30/2025 Description In the Linux kernel, the following vulnerability has been resolved: PM: sleep: Fix possible deadlocks in core system-wide PM code It is reported that in low-memory situations the system-wide resume core code deadlocks, because async_schedule_dev() executes its argument function synchronously if it cannot allocate memory (and not only in that case) and that function attempts to acquire a mutex that is already held.Executing the argument function synchronously from within dpm_async_fn() may also be problematic for ordering reasons (it may cause a consumer device's resume callback to be invoked before a requisite supplier device's one, for example). Address this by changing the code in question to use async_schedule_dev_nocall() for scheduling the asynchronous execution of device suspend and resume functions and to directly run them synchronously if async_schedule_dev_nocall() returns false. Solution(s) huawei-euleros-2_0_sp11-upgrade-bpftool huawei-euleros-2_0_sp11-upgrade-kernel huawei-euleros-2_0_sp11-upgrade-kernel-abi-stablelists huawei-euleros-2_0_sp11-upgrade-kernel-tools huawei-euleros-2_0_sp11-upgrade-kernel-tools-libs huawei-euleros-2_0_sp11-upgrade-python3-perf References https://attackerkb.com/topics/cve-2023-52498 CVE - 2023-52498 EulerOS-SA-2024-1837

Huawei EulerOS: CVE-2023-52492: kernel security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 03/11/2024 Created 06/26/2024 Added 06/26/2024 Modified 11/11/2024 Description In the Linux kernel, the following vulnerability has been resolved: dmaengine: fix NULL pointer in channel unregistration function __dma_async_device_channel_register() can fail. In case of failure, chan->local is freed (with free_percpu()), and chan->local is nullified. When dma_async_device_unregister() is called (because of managed API or intentionally by DMA controller driver), channels are unconditionally unregistered, leading to this NULL pointer: [1.318693] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000d0 [...] [1.484499] Call trace: [1.486930]device_del+0x40/0x394 [1.490314]device_unregister+0x20/0x7c [1.494220]__dma_async_device_channel_unregister+0x68/0xc0 Look at dma_async_device_register() function error path, channel device unregistration is done only if chan->local is not NULL. Then add the same condition at the beginning of __dma_async_device_channel_unregister() function, to avoid NULL pointer issue whatever the API used to reach this function. Solution(s) huawei-euleros-2_0_sp11-upgrade-bpftool huawei-euleros-2_0_sp11-upgrade-kernel huawei-euleros-2_0_sp11-upgrade-kernel-abi-stablelists huawei-euleros-2_0_sp11-upgrade-kernel-tools huawei-euleros-2_0_sp11-upgrade-kernel-tools-libs huawei-euleros-2_0_sp11-upgrade-python3-perf References https://attackerkb.com/topics/cve-2023-52492 CVE - 2023-52492 EulerOS-SA-2024-1837