CVE-2025-38461

Summary

In the Linux kernel, the following vulnerability has been resolved: vsock: Fix transport_* TOCTOU Transport assignment may race with module unload. Protect new_transport from becoming a stale pointer. This also takes care of an insecure call in vsock_use_local_transport(); add a lockdep assert. BUG: unable to handle page fault for address: fffffbfff8056000 Oops: Oops: 0000 [#1] SMP KASAN RIP: 0010:vsock_assign_transport+0x366/0x600 Call Trace: vsock_connect+0x59c/0xc40 __sys_connect+0xe8/0x100 __x64_sys_connect+0x6e/0xc0 do_syscall_64+0x92/0x1c0 entry_SYSCALL_64_after_hwframe+0x4b/0x53

Impact & exploitability

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products we track (2)

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/36a439049b34cca0b3661276049b84a1f76cc21a ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/36a439049b34cca0b3661276049b84a1f76cc21aPatch
• https://git.kernel.org/stable/c/687aa0c5581b8d4aa87fd92973e4ee576b550cdfPatch
• https://git.kernel.org/stable/c/7b73bddf54777fb62d4d8c7729d0affe6df04477Patch
• https://git.kernel.org/stable/c/8667e8d0eb46bc54fdae30ba2f4786407d3d88ebPatch
• https://git.kernel.org/stable/c/9ce53e744f18e73059d3124070e960f3aa9902bfPatch
• https://git.kernel.org/stable/c/9d24bb6780282b0255b9929abe5e8f98007e2c6ePatch
• https://git.kernel.org/stable/c/ae2c712ba39c7007de63cb0c75b51ce1caaf1da5Patch
• https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlAdvisory