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Debian: CVE-2024-38555: linux -- security update Severity 7 CVSS (AV:L/AC:L/Au:S/C:C/I:C/A:C) Published 06/19/2024 Created 07/17/2024 Added 07/17/2024 Modified 01/28/2025 Description In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Discard command completions in internal error Fix use after free when FW completion arrives while device is in internal error state. Avoid calling completion handler in this case, since the device will flush the command interface and trigger all completions manually. Kernel log: ------------[ cut here ]------------ refcount_t: underflow; use-after-free. ... RIP: 0010:refcount_warn_saturate+0xd8/0xe0 ... Call Trace: <IRQ> ? __warn+0x79/0x120 ? refcount_warn_saturate+0xd8/0xe0 ? report_bug+0x17c/0x190 ? handle_bug+0x3c/0x60 ? exc_invalid_op+0x14/0x70 ? asm_exc_invalid_op+0x16/0x20 ? refcount_warn_saturate+0xd8/0xe0 cmd_ent_put+0x13b/0x160 [mlx5_core] mlx5_cmd_comp_handler+0x5f9/0x670 [mlx5_core] cmd_comp_notifier+0x1f/0x30 [mlx5_core] notifier_call_chain+0x35/0xb0 atomic_notifier_call_chain+0x16/0x20 mlx5_eq_async_int+0xf6/0x290 [mlx5_core] notifier_call_chain+0x35/0xb0 atomic_notifier_call_chain+0x16/0x20 irq_int_handler+0x19/0x30 [mlx5_core] __handle_irq_event_percpu+0x4b/0x160 handle_irq_event+0x2e/0x80 handle_edge_irq+0x98/0x230 __common_interrupt+0x3b/0xa0 common_interrupt+0x7b/0xa0 </IRQ> <TASK> asm_common_interrupt+0x22/0x40 Solution(s) debian-upgrade-linux References https://attackerkb.com/topics/cve-2024-38555 CVE - 2024-38555 DSA-5730-1

Red Hat: CVE-2024-36978: kernel: net: sched: sch_multiq: fix possible OOB write in multiq_tune() (Multiple Advisories) Severity 5 CVSS (AV:L/AC:L/Au:S/C:N/I:N/A:C) Published 06/19/2024 Created 07/26/2024 Added 07/25/2024 Modified 12/05/2024 Description In the Linux kernel, the following vulnerability has been resolved: net: sched: sch_multiq: fix possible OOB write in multiq_tune() q->bands will be assigned to qopt->bands to execute subsequent code logic after kmalloc. So the old q->bands should not be used in kmalloc. Otherwise, an out-of-bounds write will occur. Solution(s) redhat-upgrade-kernel redhat-upgrade-kernel-rt References CVE-2024-36978 RHSA-2024:4823 RHSA-2024:4831 RHSA-2024:5101 RHSA-2024:5102 RHSA-2024:6993 RHSA-2024:8162 View more

Debian: CVE-2021-47579: linux -- security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 06/19/2024 Created 07/31/2024 Added 07/30/2024 Modified 07/30/2024 Description In the Linux kernel, the following vulnerability has been resolved: ovl: fix warning in ovl_create_real() Syzbot triggered the following warning in ovl_workdir_create() -> ovl_create_real(): if (!err && WARN_ON(!newdentry->d_inode)) { The reason is that the cgroup2 filesystem returns from mkdir without instantiating the new dentry. Weird filesystems such as this will be rejected by overlayfs at a later stage during setup, but to prevent such a warning, call ovl_mkdir_real() directly from ovl_workdir_create() and reject this case early. Solution(s) debian-upgrade-linux References https://attackerkb.com/topics/cve-2021-47579 CVE - 2021-47579

Huawei EulerOS: CVE-2024-38601: kernel security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 06/19/2024 Created 10/09/2024 Added 10/08/2024 Modified 10/08/2024 Description In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix a race between readers and resize checks The reader code in rb_get_reader_page() swaps a new reader page into the ring buffer by doing cmpxchg on old->list.prev->next to point it to the new page. Following that, if the operation is successful, old->list.next->prev gets updated too. This means the underlying doubly-linked list is temporarily inconsistent, page->prev->next or page->next->prev might not be equal back to page for some page in the ring buffer. The resize operation in ring_buffer_resize() can be invoked in parallel. It calls rb_check_pages() which can detect the described inconsistency and stop further tracing: [190.271762] ------------[ cut here ]------------ [190.271771] WARNING: CPU: 1 PID: 6186 at kernel/trace/ring_buffer.c:1467 rb_check_pages.isra.0+0x6a/0xa0 [190.271789] Modules linked in: [...] [190.271991] Unloaded tainted modules: intel_uncore_frequency(E):1 skx_edac(E):1 [190.272002] CPU: 1 PID: 6186 Comm: cmd.sh Kdump: loaded Tainted: GE6.9.0-rc6-default #5 158d3e1e6d0b091c34c3b96bfd99a1c58306d79f [190.272011] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.0-0-gd239552c-rebuilt.opensuse.org 04/01/2014 [190.272015] RIP: 0010:rb_check_pages.isra.0+0x6a/0xa0 [190.272023] Code: [...] [190.272028] RSP: 0018:ffff9c37463abb70 EFLAGS: 00010206 [190.272034] RAX: ffff8eba04b6cb80 RBX: 0000000000000007 RCX: ffff8eba01f13d80 [190.272038] RDX: ffff8eba01f130c0 RSI: ffff8eba04b6cd00 RDI: ffff8eba0004c700 [190.272042] RBP: ffff8eba0004c700 R08: 0000000000010002 R09: 0000000000000000 [190.272045] R10: 00000000ffff7f52 R11: ffff8eba7f600000 R12: ffff8eba0004c720 [190.272049] R13: ffff8eba00223a00 R14: 0000000000000008 R15: ffff8eba067a8000 [190.272053] FS:00007f1bd64752c0(0000) GS:ffff8eba7f680000(0000) knlGS:0000000000000000 [190.272057] CS:0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [190.272061] CR2: 00007f1bd6662590 CR3: 000000010291e001 CR4: 0000000000370ef0 [190.272070] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [190.272073] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [190.272077] Call Trace: [190.272098]<TASK> [190.272189]ring_buffer_resize+0x2ab/0x460 [190.272199]__tracing_resize_ring_buffer.part.0+0x23/0xa0 [190.272206]tracing_resize_ring_buffer+0x65/0x90 [190.272216]tracing_entries_write+0x74/0xc0 [190.272225]vfs_write+0xf5/0x420 [190.272248]ksys_write+0x67/0xe0 [190.272256]do_syscall_64+0x82/0x170 [190.272363]entry_SYSCALL_64_after_hwframe+0x76/0x7e [190.272373] RIP: 0033:0x7f1bd657d263 [190.272381] Code: [...] [190.272385] RSP: 002b:00007ffe72b643f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [190.272391] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f1bd657d263 [190.272395] RDX: 0000000000000002 RSI: 0000555a6eb538e0 RDI: 0000000000000001 [190.272398] RBP: 0000555a6eb538e0 R08: 000000000000000a R09: 0000000000000000 [190.272401] R10: 0000555a6eb55190 R11: 0000000000000246 R12: 00007f1bd6662500 [190.272404] R13: 0000000000000002 R14: 00007f1bd6667c00 R15: 0000000000000002 [190.272412]</TASK> [190.272414] ---[ end trace 0000000000000000 ]--- Note that ring_buffer_resize() calls rb_check_pages() only if the parent trace_buffer has recording disabled. Recent commit d78ab792705c ("tracing: Stop current tracer when resizing buffer") causes that it is now always the case which makes it more likely to experience this issue. The window to hit this race is nonetheless very small. To help reproducing it, one can add a delay loop in rb_get_reader_page(): ret = rb_head_page_replace(reader, cpu_buffer->reader_page); if (!ret) goto spin; for (unsigned i = 0; i < 1U << 26; i++)/* inserted delay loop */ __asm__ __volatile__ ("" : : : "memory"); rb_list_head(reader->list.next)->prev = &cpu_buffer->reader_page->list; .. ---truncated--- 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-2024-38601 CVE - 2024-38601 EulerOS-SA-2024-2394

Huawei EulerOS: CVE-2024-38596: kernel security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 06/19/2024 Created 10/09/2024 Added 10/08/2024 Modified 10/08/2024 Description In the Linux kernel, the following vulnerability has been resolved: af_unix: Fix data races in unix_release_sock/unix_stream_sendmsg A data-race condition has been identified in af_unix. In one data path, the write function unix_release_sock() atomically writes to sk->sk_shutdown using WRITE_ONCE. However, on the reader side, unix_stream_sendmsg() does not read it atomically. Consequently, this issue is causing the following KCSAN splat to occur: BUG: KCSAN: data-race in unix_release_sock / unix_stream_sendmsg write (marked) to 0xffff88867256ddbb of 1 bytes by task 7270 on cpu 28: unix_release_sock (net/unix/af_unix.c:640) unix_release (net/unix/af_unix.c:1050) sock_close (net/socket.c:659 net/socket.c:1421) __fput (fs/file_table.c:422) __fput_sync (fs/file_table.c:508) __se_sys_close (fs/open.c:1559 fs/open.c:1541) __x64_sys_close (fs/open.c:1541) x64_sys_call (arch/x86/entry/syscall_64.c:33) do_syscall_64 (arch/x86/entry/common.c:?) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) read to 0xffff88867256ddbb of 1 bytes by task 989 on cpu 14: unix_stream_sendmsg (net/unix/af_unix.c:2273) __sock_sendmsg (net/socket.c:730 net/socket.c:745) ____sys_sendmsg (net/socket.c:2584) __sys_sendmmsg (net/socket.c:2638 net/socket.c:2724) __x64_sys_sendmmsg (net/socket.c:2753 net/socket.c:2750 net/socket.c:2750) x64_sys_call (arch/x86/entry/syscall_64.c:33) do_syscall_64 (arch/x86/entry/common.c:?) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) value changed: 0x01 -> 0x03 The line numbers are related to commit dd5a440a31fa ("Linux 6.9-rc7"). Commit e1d09c2c2f57 ("af_unix: Fix data races around sk->sk_shutdown.") addressed a comparable issue in the past regarding sk->sk_shutdown. However, it overlooked resolving this particular data path. This patch only offending unix_stream_sendmsg() function, since the other reads seem to be protected by unix_state_lock() as discussed in 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-2024-38596 CVE - 2024-38596 EulerOS-SA-2024-2394

Huawei EulerOS: CVE-2024-38559: kernel security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 06/19/2024 Created 10/10/2024 Added 10/09/2024 Modified 10/09/2024 Description In the Linux kernel, the following vulnerability has been resolved: scsi: qedf: Ensure the copied buf is NUL terminated Currently, we allocate a count-sized kernel buffer and copy count from userspace to that buffer. Later, we use kstrtouint on this buffer but we don't ensure that the string is terminated inside the buffer, this can lead to OOB read when using kstrtouint. Fix this issue by using memdup_user_nul instead of memdup_user. 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-2024-38559 CVE - 2024-38559 EulerOS-SA-2024-2544

Huawei EulerOS: CVE-2024-38558: kernel security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 06/19/2024 Created 10/10/2024 Added 10/09/2024 Modified 10/09/2024 Description In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix overwriting ct original tuple for ICMPv6 OVS_PACKET_CMD_EXECUTE has 3 main attributes: - OVS_PACKET_ATTR_KEY - Packet metadata in a netlink format. - OVS_PACKET_ATTR_PACKET - Binary packet content. - OVS_PACKET_ATTR_ACTIONS - Actions to execute on the packet. OVS_PACKET_ATTR_KEY is parsed first to populate sw_flow_key structure with the metadata like conntrack state, input port, recirculation id, etc.Then the packet itself gets parsed to populate the rest of the keys from the packet headers. Whenever the packet parsing code starts parsing the ICMPv6 header, it first zeroes out fields in the key corresponding to Neighbor Discovery information even if it is not an ND packet. It is an 'ipv6.nd' field.However, the 'ipv6' is a union that shares the space between 'nd' and 'ct_orig' that holds the original tuple conntrack metadata parsed from the OVS_PACKET_ATTR_KEY. ND packets should not normally have conntrack state, so it's fine to share the space, but normal ICMPv6 Echo packets or maybe other types of ICMPv6 can have the state attached and it should not be overwritten. The issue results in all but the last 4 bytes of the destination address being wiped from the original conntrack tuple leading to incorrect packet matching and potentially executing wrong actions in case this packet recirculates within the datapath or goes back to userspace. ND fields should not be accessed in non-ND packets, so not clearing them should be fine.Executing memset() only for actual ND packets to avoid the issue. Initializing the whole thing before parsing is needed because ND packet may not contain all the options. The issue only affects the OVS_PACKET_CMD_EXECUTE path and doesn't affect packets entering OVS datapath from network interfaces, because in this case CT metadata is populated from skb after the packet is already parsed. 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-2024-38558 CVE - 2024-38558 EulerOS-SA-2024-2544

Huawei EulerOS: CVE-2024-38615: kernel security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 06/19/2024 Created 10/10/2024 Added 10/09/2024 Modified 10/09/2024 Description In the Linux kernel, the following vulnerability has been resolved: cpufreq: exit() callback is optional The exit() callback is optional and shouldn't be called without checking a valid pointer first. Also, we must clear freq_table pointer even if the exit() callback isn't present. 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-2024-38615 CVE - 2024-38615 EulerOS-SA-2024-2544

Rocky Linux: CVE-2024-38598: kernel (RLSA-2024-5101) Severity 5 CVSS (AV:L/AC:L/Au:S/C:N/I:N/A:C) Published 06/19/2024 Created 08/23/2024 Added 08/22/2024 Modified 01/30/2025 Description In the Linux kernel, the following vulnerability has been resolved: md: fix resync softlockup when bitmap size is less than array size Is is reported that for dm-raid10, lvextend + lvchange --syncaction will trigger following softlockup: kernel:watchdog: BUG: soft lockup - CPU#3 stuck for 26s! [mdX_resync:6976] CPU: 7 PID: 3588 Comm: mdX_resync Kdump: loaded Not tainted 6.9.0-rc4-next-20240419 #1 RIP: 0010:_raw_spin_unlock_irq+0x13/0x30 Call Trace: <TASK> md_bitmap_start_sync+0x6b/0xf0 raid10_sync_request+0x25c/0x1b40 [raid10] md_do_sync+0x64b/0x1020 md_thread+0xa7/0x170 kthread+0xcf/0x100 ret_from_fork+0x30/0x50 ret_from_fork_asm+0x1a/0x30 And the detailed process is as follows: md_do_sync j = mddev->resync_min while (j < max_sectors) sectors = raid10_sync_request(mddev, j, &skipped) if (!md_bitmap_start_sync(..., &sync_blocks)) // md_bitmap_start_sync set sync_blocks to 0 return sync_blocks + sectors_skippe; // sectors = 0; j += sectors; // j never change Root cause is that commit 301867b1c168 ("md/raid10: check slab-out-of-bounds in md_bitmap_get_counter") return early from md_bitmap_get_counter(), without setting returned blocks. Fix this problem by always set returned blocks from md_bitmap_get_counter"(), as it used to be. Noted that this patch just fix the softlockup problem in kernel, the case that bitmap size doesn't match array size still need to be fixed. 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-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-2024-38598 CVE - 2024-38598 https://errata.rockylinux.org/RLSA-2024:5101

Huawei EulerOS: CVE-2024-38556: kernel security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 06/19/2024 Created 10/10/2024 Added 10/09/2024 Modified 10/09/2024 Description In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Add a timeout to acquire the command queue semaphore Prevent forced completion handling on an entry that has not yet been assigned an index, causing an out of bounds access on idx = -22. Instead of waiting indefinitely for the sem, blocking flow now waits for index to be allocated or a sem acquisition timeout before beginning the timer for FW completion. Kernel log example: mlx5_core 0000:06:00.0: wait_func_handle_exec_timeout:1128:(pid 185911): cmd[-22]: CREATE_UCTX(0xa04) No done completion 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-2024-38556 CVE - 2024-38556 EulerOS-SA-2024-2544

Huawei EulerOS: CVE-2024-38552: kernel security update Severity 7 CVSS (AV:L/AC:L/Au:S/C:C/I:C/A:C) Published 06/19/2024 Created 10/10/2024 Added 10/09/2024 Modified 01/30/2025 Description In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix potential index out of bounds in color transformation function Fixes index out of bounds issue in the color transformation function. The issue could occur when the index 'i' exceeds the number of transfer function points (TRANSFER_FUNC_POINTS). The fix adds a check to ensure 'i' is within bounds before accessing the transfer function points. If 'i' is out of bounds, an error message is logged and the function returns false to indicate an error. Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_cm_common.c:405 cm_helper_translate_curve_to_hw_format() error: buffer overflow 'output_tf->tf_pts.red' 1025 <= s32max drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_cm_common.c:406 cm_helper_translate_curve_to_hw_format() error: buffer overflow 'output_tf->tf_pts.green' 1025 <= s32max drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_cm_common.c:407 cm_helper_translate_curve_to_hw_format() error: buffer overflow 'output_tf->tf_pts.blue' 1025 <= s32max 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-2024-38552 CVE - 2024-38552 EulerOS-SA-2024-2544

Huawei EulerOS: CVE-2024-38601: kernel security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 06/19/2024 Created 10/10/2024 Added 10/09/2024 Modified 10/09/2024 Description In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix a race between readers and resize checks The reader code in rb_get_reader_page() swaps a new reader page into the ring buffer by doing cmpxchg on old->list.prev->next to point it to the new page. Following that, if the operation is successful, old->list.next->prev gets updated too. This means the underlying doubly-linked list is temporarily inconsistent, page->prev->next or page->next->prev might not be equal back to page for some page in the ring buffer. The resize operation in ring_buffer_resize() can be invoked in parallel. It calls rb_check_pages() which can detect the described inconsistency and stop further tracing: [190.271762] ------------[ cut here ]------------ [190.271771] WARNING: CPU: 1 PID: 6186 at kernel/trace/ring_buffer.c:1467 rb_check_pages.isra.0+0x6a/0xa0 [190.271789] Modules linked in: [...] [190.271991] Unloaded tainted modules: intel_uncore_frequency(E):1 skx_edac(E):1 [190.272002] CPU: 1 PID: 6186 Comm: cmd.sh Kdump: loaded Tainted: GE6.9.0-rc6-default #5 158d3e1e6d0b091c34c3b96bfd99a1c58306d79f [190.272011] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.0-0-gd239552c-rebuilt.opensuse.org 04/01/2014 [190.272015] RIP: 0010:rb_check_pages.isra.0+0x6a/0xa0 [190.272023] Code: [...] [190.272028] RSP: 0018:ffff9c37463abb70 EFLAGS: 00010206 [190.272034] RAX: ffff8eba04b6cb80 RBX: 0000000000000007 RCX: ffff8eba01f13d80 [190.272038] RDX: ffff8eba01f130c0 RSI: ffff8eba04b6cd00 RDI: ffff8eba0004c700 [190.272042] RBP: ffff8eba0004c700 R08: 0000000000010002 R09: 0000000000000000 [190.272045] R10: 00000000ffff7f52 R11: ffff8eba7f600000 R12: ffff8eba0004c720 [190.272049] R13: ffff8eba00223a00 R14: 0000000000000008 R15: ffff8eba067a8000 [190.272053] FS:00007f1bd64752c0(0000) GS:ffff8eba7f680000(0000) knlGS:0000000000000000 [190.272057] CS:0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [190.272061] CR2: 00007f1bd6662590 CR3: 000000010291e001 CR4: 0000000000370ef0 [190.272070] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [190.272073] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [190.272077] Call Trace: [190.272098]<TASK> [190.272189]ring_buffer_resize+0x2ab/0x460 [190.272199]__tracing_resize_ring_buffer.part.0+0x23/0xa0 [190.272206]tracing_resize_ring_buffer+0x65/0x90 [190.272216]tracing_entries_write+0x74/0xc0 [190.272225]vfs_write+0xf5/0x420 [190.272248]ksys_write+0x67/0xe0 [190.272256]do_syscall_64+0x82/0x170 [190.272363]entry_SYSCALL_64_after_hwframe+0x76/0x7e [190.272373] RIP: 0033:0x7f1bd657d263 [190.272381] Code: [...] [190.272385] RSP: 002b:00007ffe72b643f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [190.272391] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f1bd657d263 [190.272395] RDX: 0000000000000002 RSI: 0000555a6eb538e0 RDI: 0000000000000001 [190.272398] RBP: 0000555a6eb538e0 R08: 000000000000000a R09: 0000000000000000 [190.272401] R10: 0000555a6eb55190 R11: 0000000000000246 R12: 00007f1bd6662500 [190.272404] R13: 0000000000000002 R14: 00007f1bd6667c00 R15: 0000000000000002 [190.272412]</TASK> [190.272414] ---[ end trace 0000000000000000 ]--- Note that ring_buffer_resize() calls rb_check_pages() only if the parent trace_buffer has recording disabled. Recent commit d78ab792705c ("tracing: Stop current tracer when resizing buffer") causes that it is now always the case which makes it more likely to experience this issue. The window to hit this race is nonetheless very small. To help reproducing it, one can add a delay loop in rb_get_reader_page(): ret = rb_head_page_replace(reader, cpu_buffer->reader_page); if (!ret) goto spin; for (unsigned i = 0; i < 1U << 26; i++)/* inserted delay loop */ __asm__ __volatile__ ("" : : : "memory"); rb_list_head(reader->list.next)->prev = &cpu_buffer->reader_page->list; .. ---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-2024-38601 CVE - 2024-38601 EulerOS-SA-2024-2544

Huawei EulerOS: CVE-2024-38555: kernel security update Severity 7 CVSS (AV:L/AC:L/Au:S/C:C/I:C/A:C) Published 06/19/2024 Created 10/10/2024 Added 10/09/2024 Modified 01/28/2025 Description In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Discard command completions in internal error Fix use after free when FW completion arrives while device is in internal error state. Avoid calling completion handler in this case, since the device will flush the command interface and trigger all completions manually. Kernel log: ------------[ cut here ]------------ refcount_t: underflow; use-after-free. ... RIP: 0010:refcount_warn_saturate+0xd8/0xe0 ... Call Trace: <IRQ> ? __warn+0x79/0x120 ? refcount_warn_saturate+0xd8/0xe0 ? report_bug+0x17c/0x190 ? handle_bug+0x3c/0x60 ? exc_invalid_op+0x14/0x70 ? asm_exc_invalid_op+0x16/0x20 ? refcount_warn_saturate+0xd8/0xe0 cmd_ent_put+0x13b/0x160 [mlx5_core] mlx5_cmd_comp_handler+0x5f9/0x670 [mlx5_core] cmd_comp_notifier+0x1f/0x30 [mlx5_core] notifier_call_chain+0x35/0xb0 atomic_notifier_call_chain+0x16/0x20 mlx5_eq_async_int+0xf6/0x290 [mlx5_core] notifier_call_chain+0x35/0xb0 atomic_notifier_call_chain+0x16/0x20 irq_int_handler+0x19/0x30 [mlx5_core] __handle_irq_event_percpu+0x4b/0x160 handle_irq_event+0x2e/0x80 handle_edge_irq+0x98/0x230 __common_interrupt+0x3b/0xa0 common_interrupt+0x7b/0xa0 </IRQ> <TASK> asm_common_interrupt+0x22/0x40 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-2024-38555 CVE - 2024-38555 EulerOS-SA-2024-2544

Rocky Linux: CVE-2024-36978: kernel (Multiple Advisories) Severity 7 CVSS (AV:L/AC:L/Au:S/C:C/I:C/A:C) Published 06/19/2024 Created 08/23/2024 Added 08/22/2024 Modified 01/28/2025 Description In the Linux kernel, the following vulnerability has been resolved: net: sched: sch_multiq: fix possible OOB write in multiq_tune() q->bands will be assigned to qopt->bands to execute subsequent code logic after kmalloc. So the old q->bands should not be used in kmalloc. Otherwise, an out-of-bounds write will occur. 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-devel-matched rocky-upgrade-kernel-debug-modules rocky-upgrade-kernel-debug-modules-core rocky-upgrade-kernel-debug-modules-extra rocky-upgrade-kernel-debug-uki-virt rocky-upgrade-kernel-debuginfo rocky-upgrade-kernel-debuginfo-common-x86_64 rocky-upgrade-kernel-devel rocky-upgrade-kernel-devel-matched rocky-upgrade-kernel-headers rocky-upgrade-kernel-modules rocky-upgrade-kernel-modules-core 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-core 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-core 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-kernel-uki-virt rocky-upgrade-kernel-zfcpdump rocky-upgrade-kernel-zfcpdump-core rocky-upgrade-kernel-zfcpdump-debuginfo rocky-upgrade-kernel-zfcpdump-devel rocky-upgrade-kernel-zfcpdump-devel-matched rocky-upgrade-kernel-zfcpdump-modules rocky-upgrade-kernel-zfcpdump-modules-core rocky-upgrade-kernel-zfcpdump-modules-extra rocky-upgrade-libperf rocky-upgrade-libperf-debuginfo rocky-upgrade-perf rocky-upgrade-perf-debuginfo rocky-upgrade-python3-perf rocky-upgrade-python3-perf-debuginfo rocky-upgrade-rtla rocky-upgrade-rv References https://attackerkb.com/topics/cve-2024-36978 CVE - 2024-36978 https://errata.rockylinux.org/RLSA-2024:5101 https://errata.rockylinux.org/RLSA-2024:5102 https://errata.rockylinux.org/RLSA-2024:8162

Debian: CVE-2021-47595: linux -- security update Severity 5 CVSS (AV:L/AC:L/Au:S/C:N/I:N/A:C) Published 06/19/2024 Created 07/31/2024 Added 07/30/2024 Modified 01/30/2025 Description In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_ets: don't remove idle classes from the round-robin list Shuang reported that the following script: 1) tc qdisc add dev ddd0 handle 10: parent 1: ets bands 8 strict 4 priomap 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 2) mausezahn ddd0-A 10.10.10.1 -B 10.10.10.2 -c 0 -a own -b 00:c1:a0:c1:a0:00 -t udp & 3) tc qdisc change dev ddd0 handle 10: ets bands 4 strict 2 quanta 2500 2500 priomap 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 crashes systematically when line 2) is commented: list_del corruption, ffff8e028404bd30->next is LIST_POISON1 (dead000000000100) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:47! invalid opcode: 0000 [#1] PREEMPT SMP NOPTI CPU: 0 PID: 954 Comm: tc Not tainted 5.16.0-rc4+ #478 Hardware name: Red Hat KVM, BIOS 1.11.1-4.module+el8.1.0+4066+0f1aadab 04/01/2014 RIP: 0010:__list_del_entry_valid.cold.1+0x12/0x47 Code: fe ff 0f 0b 48 89 c1 4c 89 c6 48 c7 c7 08 42 1b 87 e8 1d c5 fe ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 98 42 1b 87 e8 09 c5 fe ff <0f> 0b 48 c7 c7 48 43 1b 87 e8 fb c4 fe ff 0f 0b 48 89 f2 48 89 fe RSP: 0018:ffffae46807a3888 EFLAGS: 00010246 RAX: 000000000000004e RBX: 0000000000000007 RCX: 0000000000000202 RDX: 0000000000000000 RSI: ffffffff871ac536 RDI: 00000000ffffffff RBP: ffffae46807a3a10 R08: 0000000000000000 R09: c0000000ffff7fff R10: 0000000000000001 R11: ffffae46807a36a8 R12: ffff8e028404b800 R13: ffff8e028404bd30 R14: dead000000000100 R15: ffff8e02fafa2400 FS:00007efdc92e4480(0000) GS:ffff8e02fb600000(0000) knlGS:0000000000000000 CS:0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000682f48 CR3: 00000001058be000 CR4: 0000000000350ef0 Call Trace: <TASK> ets_qdisc_change+0x58b/0xa70 [sch_ets] tc_modify_qdisc+0x323/0x880 rtnetlink_rcv_msg+0x169/0x4a0 netlink_rcv_skb+0x50/0x100 netlink_unicast+0x1a5/0x280 netlink_sendmsg+0x257/0x4d0 sock_sendmsg+0x5b/0x60 ____sys_sendmsg+0x1f2/0x260 ___sys_sendmsg+0x7c/0xc0 __sys_sendmsg+0x57/0xa0 do_syscall_64+0x3a/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7efdc8031338 Code: 89 02 48 c7 c0 ff ff ff ff eb b5 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 8d 05 25 43 2c 00 8b 00 85 c0 75 17 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 41 54 41 89 d4 55 RSP: 002b:00007ffdf1ce9828 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000061b37a97 RCX: 00007efdc8031338 RDX: 0000000000000000 RSI: 00007ffdf1ce9890 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 000000000078a940 R10: 000000000000000c R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000688880 R14: 0000000000000000 R15: 0000000000000000 </TASK> Modules linked in: sch_ets sch_tbf dummy rfkill iTCO_wdt iTCO_vendor_support intel_rapl_msr intel_rapl_common joydev pcspkr i2c_i801 virtio_balloon i2c_smbus lpc_ich ip_tables xfs libcrc32c crct10dif_pclmul crc32_pclmul crc32c_intel serio_raw ghash_clmulni_intel ahci libahci libata virtio_blk virtio_console virtio_net net_failover failover sunrpc dm_mirror dm_region_hash dm_log dm_mod [last unloaded: sch_ets] ---[ end trace f35878d1912655c2 ]--- RIP: 0010:__list_del_entry_valid.cold.1+0x12/0x47 Code: fe ff 0f 0b 48 89 c1 4c 89 c6 48 c7 c7 08 42 1b 87 e8 1d c5 fe ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 98 42 1b 87 e8 09 c5 fe ff <0f> 0b 48 c7 c7 48 43 1b 87 e8 fb c4 fe ff 0f 0b 48 89 f2 48 89 fe RSP: 0018:ffffae46807a3888 EFLAGS: 00010246 RAX: 000000000000004e RBX: 0000000000000007 RCX: 0000000000000202 RDX: 0000000000000000 RSI: ffffffff871ac536 RDI: 00000000ffffffff RBP: ffffae46807a3a10 R08: 0000000000000000 R09: c0000000ffff7fff R10: 0000000000000001 R11: ffffae46807a36a8 R12: ffff8e028404b800 R13: ffff8e028404bd30 R14: dead000000000100 R15: ffff8e02fafa2400 FS:00007efdc92e4480(0000) GS:ffff8e02fb600000(0000) knlGS:0000000000000000 CS:0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000 ---truncated--- Solution(s) debian-upgrade-linux References https://attackerkb.com/topics/cve-2021-47595 CVE - 2021-47595

Oracle Linux: CVE-2021-47582: ELSA-2024-7000:kernel security update (IMPORTANT) (Multiple Advisories) Severity 2 CVSS (AV:L/AC:L/Au:S/C:N/I:N/A:P) Published 06/19/2024 Created 10/24/2024 Added 10/16/2024 Modified 12/10/2024 Description In the Linux kernel, the following vulnerability has been resolved: USB: core: Make do_proc_control() and do_proc_bulk() killable The USBDEVFS_CONTROL and USBDEVFS_BULK ioctls invoke usb_start_wait_urb(), which contains an uninterruptible wait with a user-specified timeout value.If timeout value is very large and the device being accessed does not respond in a reasonable amount of time, the kernel will complain about &quot;Task X blocked for more than N seconds&quot;, as found in testing by syzbot: INFO: task syz-executor.0:8700 blocked for more than 143 seconds. Not tainted 5.14.0-rc7-syzkaller #0 &quot;echo 0 &gt; /proc/sys/kernel/hung_task_timeout_secs&quot; disables this message. task:syz-executor.0state:D stack:23192 pid: 8700 ppid:8455 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4681 [inline] __schedule+0xc07/0x11f0 kernel/sched/core.c:5938 schedule+0x14b/0x210 kernel/sched/core.c:6017 schedule_timeout+0x98/0x2f0 kernel/time/timer.c:1857 do_wait_for_common+0x2da/0x480 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion_timeout+0x46/0x60 kernel/sched/completion.c:157 usb_start_wait_urb+0x167/0x550 drivers/usb/core/message.c:63 do_proc_bulk+0x978/0x1080 drivers/usb/core/devio.c:1236 proc_bulk drivers/usb/core/devio.c:1273 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2547 [inline] usbdev_ioctl+0x3441/0x6b10 drivers/usb/core/devio.c:2713 ... To fix this problem, this patch replaces usbfs&apos;s calls to usb_control_msg() and usb_bulk_msg() with special-purpose code that does essentially the same thing (as recommended in the comment for usb_start_wait_urb()), except that it always uses a killable wait and it uses GFP_KERNEL rather than GFP_NOIO. Solution(s) oracle-linux-upgrade-kernel References https://attackerkb.com/topics/cve-2021-47582 CVE - 2021-47582 ELSA-2024-7000

Huawei EulerOS: CVE-2024-38577: kernel security update Severity 7 CVSS (AV:L/AC:L/Au:S/C:C/I:C/A:C) Published 06/19/2024 Created 10/10/2024 Added 10/09/2024 Modified 01/28/2025 Description In the Linux kernel, the following vulnerability has been resolved: rcu-tasks: Fix show_rcu_tasks_trace_gp_kthread buffer overflow There is a possibility of buffer overflow in show_rcu_tasks_trace_gp_kthread() if counters, passed to sprintf() are huge. Counter numbers, needed for this are unrealistically high, but buffer overflow is still possible. Use snprintf() with buffer size instead of sprintf(). Found by Linux Verification Center (linuxtesting.org) with SVACE. 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-2024-38577 CVE - 2024-38577 EulerOS-SA-2024-2544

Huawei EulerOS: CVE-2024-38608: kernel security update Severity 5 CVSS (AV:L/AC:L/Au:S/C:N/I:N/A:C) Published 06/19/2024 Created 10/10/2024 Added 10/09/2024 Modified 01/30/2025 Description In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix netif state handling mlx5e_suspend cleans resources only if netif_device_present() returns true. However, mlx5e_resume changes the state of netif, via mlx5e_nic_enable, only if reg_state == NETREG_REGISTERED. In the below case, the above leads to NULL-ptr Oops[1] and memory leaks: mlx5e_probe _mlx5e_resume mlx5e_attach_netdev mlx5e_nic_enable<-- netdev not reg, not calling netif_device_attach() register_netdev <-- failed for some reason. ERROR_FLOW: _mlx5e_suspend <-- netif_device_present return false, resources aren't freed :( Hence, clean resources in this case as well. [1] BUG: kernel NULL pointer dereference, address: 0000000000000000 PGD 0 P4D 0 Oops: 0010 [#1] SMP CPU: 2 PID: 9345 Comm: test-ovs-ct-gen Not tainted 6.5.0_for_upstream_min_debug_2023_09_05_16_01 #1 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:0x0 Code: Unable to access opcode bytes at0xffffffffffffffd6. RSP: 0018:ffff888178aaf758 EFLAGS: 00010246 Call Trace: <TASK> ? __die+0x20/0x60 ? page_fault_oops+0x14c/0x3c0 ? exc_page_fault+0x75/0x140 ? asm_exc_page_fault+0x22/0x30 notifier_call_chain+0x35/0xb0 blocking_notifier_call_chain+0x3d/0x60 mlx5_blocking_notifier_call_chain+0x22/0x30 [mlx5_core] mlx5_core_uplink_netdev_event_replay+0x3e/0x60 [mlx5_core] mlx5_mdev_netdev_track+0x53/0x60 [mlx5_ib] mlx5_ib_roce_init+0xc3/0x340 [mlx5_ib] __mlx5_ib_add+0x34/0xd0 [mlx5_ib] mlx5r_probe+0xe1/0x210 [mlx5_ib] ? auxiliary_match_id+0x6a/0x90 auxiliary_bus_probe+0x38/0x80 ? driver_sysfs_add+0x51/0x80 really_probe+0xc9/0x3e0 ? driver_probe_device+0x90/0x90 __driver_probe_device+0x80/0x160 driver_probe_device+0x1e/0x90 __device_attach_driver+0x7d/0x100 bus_for_each_drv+0x80/0xd0 __device_attach+0xbc/0x1f0 bus_probe_device+0x86/0xa0 device_add+0x637/0x840 __auxiliary_device_add+0x3b/0xa0 add_adev+0xc9/0x140 [mlx5_core] mlx5_rescan_drivers_locked+0x22a/0x310 [mlx5_core] mlx5_register_device+0x53/0xa0 [mlx5_core] mlx5_init_one_devl_locked+0x5c4/0x9c0 [mlx5_core] mlx5_init_one+0x3b/0x60 [mlx5_core] probe_one+0x44c/0x730 [mlx5_core] local_pci_probe+0x3e/0x90 pci_device_probe+0xbf/0x210 ? kernfs_create_link+0x5d/0xa0 ? sysfs_do_create_link_sd+0x60/0xc0 really_probe+0xc9/0x3e0 ? driver_probe_device+0x90/0x90 __driver_probe_device+0x80/0x160 driver_probe_device+0x1e/0x90 __device_attach_driver+0x7d/0x100 bus_for_each_drv+0x80/0xd0 __device_attach+0xbc/0x1f0 pci_bus_add_device+0x54/0x80 pci_iov_add_virtfn+0x2e6/0x320 sriov_enable+0x208/0x420 mlx5_core_sriov_configure+0x9e/0x200 [mlx5_core] sriov_numvfs_store+0xae/0x1a0 kernfs_fop_write_iter+0x10c/0x1a0 vfs_write+0x291/0x3c0 ksys_write+0x5f/0xe0 do_syscall_64+0x3d/0x90 entry_SYSCALL_64_after_hwframe+0x46/0xb0 CR2: 0000000000000000 ---[ end trace 0000000000000000]--- 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-2024-38608 CVE - 2024-38608 EulerOS-SA-2024-2544

SUSE: CVE-2021-47592: SUSE Linux Security Advisory Severity 5 CVSS (AV:L/AC:L/Au:S/C:N/I:N/A:C) Published 06/19/2024 Created 08/16/2024 Added 08/09/2024 Modified 01/28/2025 Description In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix tc flower deletion for VLAN priority Rx steering To replicate the issue:- 1) Add 1 flower filter for VLAN Priority based frame steering:- $ IFDEVNAME=eth0 $ tc qdisc add dev $IFDEVNAME ingress $ tc qdisc add dev $IFDEVNAME root mqprio num_tc 8 \ map 0 1 2 3 4 5 6 7 0 0 0 0 0 0 0 0 \ queues 1@0 1@1 1@2 1@3 1@4 1@5 1@6 1@7 hw 0 $ tc filter add dev $IFDEVNAME parent ffff: protocol 802.1Q \ flower vlan_prio 0 hw_tc 0 2) Get the 'pref' id $ tc filter show dev $IFDEVNAME ingress 3) Delete a specific tc flower record (say pref 49151) $ tc filter del dev $IFDEVNAME parent ffff: pref 49151 From dmesg, we will observe kernel NULL pointer ooops [197.170464] BUG: kernel NULL pointer dereference, address: 0000000000000000 [197.171367] #PF: supervisor read access in kernel mode [197.171367] #PF: error_code(0x0000) - not-present page [197.171367] PGD 0 P4D 0 [197.171367] Oops: 0000 [#1] PREEMPT SMP NOPTI <snip> [197.171367] RIP: 0010:tc_setup_cls+0x20b/0x4a0 [stmmac] <snip> [197.171367] Call Trace: [197.171367]<TASK> [197.171367]? __stmmac_disable_all_queues+0xa8/0xe0 [stmmac] [197.171367]stmmac_setup_tc_block_cb+0x70/0x110 [stmmac] [197.171367]tc_setup_cb_destroy+0xb3/0x180 [197.171367]fl_hw_destroy_filter+0x94/0xc0 [cls_flower] The above issue is due to previous incorrect implementation of tc_del_vlan_flow(), shown below, that uses flow_cls_offload_flow_rule() to get struct flow_rule *rule which is no longer valid for tc filter delete operation. struct flow_rule *rule = flow_cls_offload_flow_rule(cls); struct flow_dissector *dissector = rule->match.dissector; So, to ensure tc_del_vlan_flow() deletes the right VLAN cls record for earlier configured RX queue (configured by hw_tc) in tc_add_vlan_flow(), this patch introduces stmmac_rfs_entry as driver-side flow_cls_offload record for 'RX frame steering' tc flower, currently used for VLAN priority. The implementation has taken consideration for future extension to include other type RX frame steering such as EtherType based. v2: - Clean up overly extensive backtrace and rewrite git message to better explain the kernel NULL pointer issue. Solution(s) suse-upgrade-cluster-md-kmp-azure suse-upgrade-cluster-md-kmp-rt suse-upgrade-dlm-kmp-azure suse-upgrade-dlm-kmp-rt suse-upgrade-gfs2-kmp-azure suse-upgrade-gfs2-kmp-rt suse-upgrade-kernel-azure suse-upgrade-kernel-azure-devel suse-upgrade-kernel-azure-extra suse-upgrade-kernel-azure-livepatch-devel suse-upgrade-kernel-azure-optional suse-upgrade-kernel-azure-vdso suse-upgrade-kernel-devel-azure suse-upgrade-kernel-devel-rt suse-upgrade-kernel-rt suse-upgrade-kernel-rt-devel suse-upgrade-kernel-rt-extra suse-upgrade-kernel-rt-livepatch suse-upgrade-kernel-rt-livepatch-devel suse-upgrade-kernel-rt-optional suse-upgrade-kernel-rt-vdso suse-upgrade-kernel-rt_debug suse-upgrade-kernel-rt_debug-devel suse-upgrade-kernel-rt_debug-livepatch-devel suse-upgrade-kernel-rt_debug-vdso suse-upgrade-kernel-source-azure suse-upgrade-kernel-source-rt suse-upgrade-kernel-syms-azure suse-upgrade-kernel-syms-rt suse-upgrade-kselftests-kmp-azure suse-upgrade-kselftests-kmp-rt suse-upgrade-ocfs2-kmp-azure suse-upgrade-ocfs2-kmp-rt suse-upgrade-reiserfs-kmp-azure suse-upgrade-reiserfs-kmp-rt References https://attackerkb.com/topics/cve-2021-47592 CVE - 2021-47592

Oracle Linux: CVE-2024-38618: ELSA-2024-12581: Unbreakable Enterprise kernel security update (IMPORTANT) (Multiple Advisories) Severity 4 CVSS (AV:L/AC:L/Au:M/C:N/I:N/A:C) Published 06/19/2024 Created 08/20/2024 Added 08/16/2024 Modified 01/23/2025 Description In the Linux kernel, the following vulnerability has been resolved: ALSA: timer: Set lower bound of start tick time Currently ALSA timer doesn&apos;t have the lower limit of the start tick time, and it allows a very small size, e.g. 1 tick with 1ns resolution for hrtimer.Such a situation may lead to an unexpected RCU stall, wherethe callback repeatedly queuing the expire update, as reported by fuzzer. This patch introduces a sanity check of the timer start tick time, so that the system returns an error when a too small start size is set. As of this patch, the lower limit is hard-coded to 100us, which is small enough but can still work somehow. Solution(s) oracle-linux-upgrade-kernel-uek References https://attackerkb.com/topics/cve-2024-38618 CVE - 2024-38618 ELSA-2024-12581 ELSA-2024-12584 ELSA-2024-12585 ELSA-2024-12611

Red Hat JBossEAP: Uncontrolled Resource Consumption (CVE-2024-6162) Severity 8 CVSS (AV:N/AC:L/Au:N/C:N/I:N/A:C) Published 06/19/2024 Created 09/20/2024 Added 09/19/2024 Modified 12/20/2024 Description A vulnerability was found in Undertow, where URL-encoded request paths can be mishandled during concurrent requests on the AJP listener. This issue arises because the same buffer is used to decode the paths for multiple requests simultaneously, leading to incorrect path information being processed. As a result, the server may attempt to access the wrong path, causing errors such as "404 Not Found" or other application failures. This flaw can potentially lead to a denial of service, as legitimate resources become inaccessible due to the path mix-up.. A vulnerability was found in Undertow, where URL-encoded request paths can be mishandled during concurrent requests on the AJP listener. This issue arises because the same buffer is used to decode the paths for multiple requests simultaneously, leading to incorrect path information being processed. As a result, the server may attempt to access the wrong path, causing errors such as "404 Not Found" or other application failures. This flaw can potentially lead to a denial of service, as legitimate resources become inaccessible due to the path mix-up. Solution(s) red-hat-jboss-eap-upgrade-latest References https://attackerkb.com/topics/cve-2024-6162 CVE - 2024-6162 https://access.redhat.com/security/cve/CVE-2024-6162 https://bugzilla.redhat.com/show_bug.cgi?id=2293069 https://issues.redhat.com/browse/JBEAP-26268 https://access.redhat.com/errata/RHSA-2024:1194

Huawei EulerOS: CVE-2024-38541: kernel security update Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 06/19/2024 Created 10/10/2024 Added 10/09/2024 Modified 10/09/2024 Description In the Linux kernel, the following vulnerability has been resolved: of: module: add buffer overflow check in of_modalias() In of_modalias(), if the buffer happens to be too small even for the 1st snprintf() call, the len parameter will become negative and str parameter (if not NULL initially) will point beyond the buffer's end. Add the buffer overflow check after the 1st snprintf() call and fix such check after the strlen() call (accounting for the terminating NUL char). 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-2024-38541 CVE - 2024-38541 EulerOS-SA-2024-2544

SUSE: CVE-2021-47604: SUSE Linux Security Advisory Severity 6 CVSS (AV:L/AC:L/Au:S/C:C/I:N/A:C) Published 06/19/2024 Created 08/16/2024 Added 08/09/2024 Modified 01/28/2025 Description In the Linux kernel, the following vulnerability has been resolved: vduse: check that offset is within bounds in get_config() This condition checks "len" but it does not check "offset" and that could result in an out of bounds read if "offset > dev->config_size". The problem is that since both variables are unsigned the "dev->config_size - offset" subtraction would result in a very high unsigned value. I think these checks might not be necessary because "len" and "offset" are supposed to already have been validated using the vhost_vdpa_config_validate() function.But I do not know the code perfectly, and I like to be safe. Solution(s) suse-upgrade-cluster-md-kmp-azure suse-upgrade-cluster-md-kmp-rt suse-upgrade-dlm-kmp-azure suse-upgrade-dlm-kmp-rt suse-upgrade-gfs2-kmp-azure suse-upgrade-gfs2-kmp-rt suse-upgrade-kernel-azure suse-upgrade-kernel-azure-devel suse-upgrade-kernel-azure-extra suse-upgrade-kernel-azure-livepatch-devel suse-upgrade-kernel-azure-optional suse-upgrade-kernel-azure-vdso suse-upgrade-kernel-devel-azure suse-upgrade-kernel-devel-rt suse-upgrade-kernel-rt suse-upgrade-kernel-rt-devel suse-upgrade-kernel-rt-extra suse-upgrade-kernel-rt-livepatch suse-upgrade-kernel-rt-livepatch-devel suse-upgrade-kernel-rt-optional suse-upgrade-kernel-rt-vdso suse-upgrade-kernel-rt_debug suse-upgrade-kernel-rt_debug-devel suse-upgrade-kernel-rt_debug-livepatch-devel suse-upgrade-kernel-rt_debug-vdso suse-upgrade-kernel-source-azure suse-upgrade-kernel-source-rt suse-upgrade-kernel-syms-azure suse-upgrade-kernel-syms-rt suse-upgrade-kselftests-kmp-azure suse-upgrade-kselftests-kmp-rt suse-upgrade-ocfs2-kmp-azure suse-upgrade-ocfs2-kmp-rt suse-upgrade-reiserfs-kmp-azure suse-upgrade-reiserfs-kmp-rt References https://attackerkb.com/topics/cve-2021-47604 CVE - 2021-47604

Debian: CVE-2021-47593: linux -- security update Severity 5 CVSS (AV:L/AC:L/Au:S/C:N/I:N/A:C) Published 06/19/2024 Created 07/31/2024 Added 07/30/2024 Modified 01/30/2025 Description In the Linux kernel, the following vulnerability has been resolved: mptcp: clear 'kern' flag from fallback sockets The mptcp ULP extension relies on sk->sk_sock_kern being set correctly: It prevents setsockopt(fd, IPPROTO_TCP, TCP_ULP, "mptcp", 6); from working for plain tcp sockets (any userspace-exposed socket). But in case of fallback, accept() can return a plain tcp sk. In such case, sk is still tagged as 'kernel' and setsockopt will work. This will crash the kernel, The subflow extension has a NULL ctx->conn mptcp socket: BUG: KASAN: null-ptr-deref in subflow_data_ready+0x181/0x2b0 Call Trace: tcp_data_ready+0xf8/0x370 [..] Solution(s) debian-upgrade-linux References https://attackerkb.com/topics/cve-2021-47593 CVE - 2021-47593

Alma Linux: CVE-2021-47582: Important: kernel security update (Multiple Advisories) Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 06/19/2024 Created 09/27/2024 Added 09/26/2024 Modified 09/26/2024 Description In the Linux kernel, the following vulnerability has been resolved: USB: core: Make do_proc_control() and do_proc_bulk() killable The USBDEVFS_CONTROL and USBDEVFS_BULK ioctls invoke usb_start_wait_urb(), which contains an uninterruptible wait with a user-specified timeout value.If timeout value is very large and the device being accessed does not respond in a reasonable amount of time, the kernel will complain about "Task X blocked for more than N seconds", as found in testing by syzbot: INFO: task syz-executor.0:8700 blocked for more than 143 seconds. Not tainted 5.14.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0state:D stack:23192 pid: 8700 ppid:8455 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4681 [inline] __schedule+0xc07/0x11f0 kernel/sched/core.c:5938 schedule+0x14b/0x210 kernel/sched/core.c:6017 schedule_timeout+0x98/0x2f0 kernel/time/timer.c:1857 do_wait_for_common+0x2da/0x480 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion_timeout+0x46/0x60 kernel/sched/completion.c:157 usb_start_wait_urb+0x167/0x550 drivers/usb/core/message.c:63 do_proc_bulk+0x978/0x1080 drivers/usb/core/devio.c:1236 proc_bulk drivers/usb/core/devio.c:1273 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2547 [inline] usbdev_ioctl+0x3441/0x6b10 drivers/usb/core/devio.c:2713 ... To fix this problem, this patch replaces usbfs's calls to usb_control_msg() and usb_bulk_msg() with special-purpose code that does essentially the same thing (as recommended in the comment for usb_start_wait_urb()), except that it always uses a killable wait and it uses GFP_KERNEL rather than GFP_NOIO. 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-2021-47582 CVE - 2021-47582 https://errata.almalinux.org/8/ALSA-2024-7000.html https://errata.almalinux.org/8/ALSA-2024-7001.html