发布于3月6日3月6日 Members Alma Linux: CVE-2023-52700: Important: kernel security and bug fix update (Multiple Advisories) Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 05/21/2024 Created 07/03/2024 Added 07/03/2024 Modified 09/20/2024 Description In the Linux kernel, the following vulnerability has been resolved: tipc: fix kernel warning when sending SYN message When sending a SYN message, this kernel stack trace is observed: ... [ 13.396352] RIP: 0010:_copy_from_iter+0xb4/0x550 ... [ 13.398494] Call Trace: [ 13.398630]<TASK> [ 13.398630]? __alloc_skb+0xed/0x1a0 [ 13.398630]tipc_msg_build+0x12c/0x670 [tipc] [ 13.398630]? shmem_add_to_page_cache.isra.71+0x151/0x290 [ 13.398630]__tipc_sendmsg+0x2d1/0x710 [tipc] [ 13.398630]? tipc_connect+0x1d9/0x230 [tipc] [ 13.398630]? __local_bh_enable_ip+0x37/0x80 [ 13.398630]tipc_connect+0x1d9/0x230 [tipc] [ 13.398630]? __sys_connect+0x9f/0xd0 [ 13.398630]__sys_connect+0x9f/0xd0 [ 13.398630]? preempt_count_add+0x4d/0xa0 [ 13.398630]? fpregs_assert_state_consistent+0x22/0x50 [ 13.398630]__x64_sys_connect+0x16/0x20 [ 13.398630]do_syscall_64+0x42/0x90 [ 13.398630]entry_SYSCALL_64_after_hwframe+0x63/0xcd It is because commit a41dad905e5a ("iov_iter: saner checks for attempt to copy to/from iterator") has introduced sanity check for copying from/to iov iterator. Lacking of copy direction from the iterator viewpoint would lead to kernel stack trace like above. This commit fixes this issue by initializing the iov iterator with the correct copy direction when sending SYN or ACK without data. 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-2023-52700 CVE - 2023-52700 https://errata.almalinux.org/8/ALSA-2024-4211.html https://errata.almalinux.org/8/ALSA-2024-4352.html
