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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 19 Sep 2025 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses CWE-668
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.2:rc8:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-05-04T07:41:53.991Z

Reserved: 2024-03-07T14:49:46.891Z

Link: CVE-2023-52700

cve-icon Vulnrichment

Updated: 2024-08-02T23:11:35.606Z

cve-icon NVD

Status : Analyzed

Published: 2024-05-21T16:15:12.480

Modified: 2025-09-19T14:36:55.547

Link: CVE-2023-52700

cve-icon Redhat

Severity : Low

Publid Date: 2024-05-21T00:00:00Z

Links: CVE-2023-52700 - Bugzilla

cve-icon OpenCVE Enrichment

No data.