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Red Hat: CVE-2023-52700: kernel: tipc: fix kernel warning when sending SYN message (Multiple Advisories)

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Red Hat: CVE-2023-52700: kernel: tipc: fix kernel warning when sending SYN message (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
05/21/2024
Created
07/03/2024
Added
07/03/2024
Modified
07/09/2024

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)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

References

  • CVE-2023-52700
  • RHSA-2024:4211
  • RHSA-2024:4352
  • 查看数 712
  • 已创建
  • 最后回复

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