Description
In the Linux kernel, the following vulnerability has been resolved: vsock: Fix transport_{g2h,h2g} TOCTOU vsock_find_cid() and vsock_dev_do_ioctl() may race with module unload. transport_{g2h,h2g} may become NULL after the NULL check. Introduce vsock_transport_local_cid() to protect from a potential null-ptr-deref. KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f] RIP: 0010:vsock_find_cid+0x47/0x90 Call Trace: __vsock_bind+0x4b2/0x720 vsock_bind+0x90/0xe0 __sys_bind+0x14d/0x1e0 __x64_sys_bind+0x6e/0xc0 do_syscall_64+0x92/0x1c0 entry_SYSCALL_64_after_hwframe+0x4b/0x53 KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f] RIP: 0010:vsock_dev_do_ioctl.isra.0+0x58/0xf0 Call Trace: __x64_sys_ioctl+0x12d/0x190 do_syscall_64+0x92/0x1c0 entry_SYSCALL_64_after_hwframe+0x4b/0x53
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
c0cfa2d8a788fcf45df5bf4070ab2474c88d543a to < c5496ee685c48ed1cc183cd4263602579bb4a615affectedc0cfa2d8a788fcf45df5bf4070ab2474c88d543a to < 80d7dc15805a93d520a249ac6d13d4f4df161c1baffectedc0cfa2d8a788fcf45df5bf4070ab2474c88d543a to < 5752d8dbb3dfd7f1a9faf0f65377e60826ea9a17affectedc0cfa2d8a788fcf45df5bf4070ab2474c88d543a to < 401239811fa728fcdd53e360a91f157ffd23e1f4affectedc0cfa2d8a788fcf45df5bf4070ab2474c88d543a to < 3734d78210cceb2ee5615719a62a5c55ed381ff8affectedc0cfa2d8a788fcf45df5bf4070ab2474c88d543a to < 6a1bcab67bea797d83aa9dd948a0ac6ed52d121daffectedc0cfa2d8a788fcf45df5bf4070ab2474c88d543a to < 209fd720838aaf1420416494c5505096478156b4affected
Linux Linux
Default version status: affected
5.5affected0 to < 5.5unaffected5.10.240 to ≤ 5.10.*unaffected5.15.189 to ≤ 5.15.*unaffected6.1.146 to ≤ 6.1.*unaffected6.6.99 to ≤ 6.6.*unaffected6.12.39 to ≤ 6.12.*unaffected6.15.7 to ≤ 6.15.*unaffected6.16 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/c5496ee685c48ed1cc183cd4263602579bb4a615 ↗
- https://git.kernel.org/stable/c/80d7dc15805a93d520a249ac6d13d4f4df161c1b ↗
- https://git.kernel.org/stable/c/5752d8dbb3dfd7f1a9faf0f65377e60826ea9a17 ↗
- https://git.kernel.org/stable/c/401239811fa728fcdd53e360a91f157ffd23e1f4 ↗
- https://git.kernel.org/stable/c/3734d78210cceb2ee5615719a62a5c55ed381ff8 ↗
- https://git.kernel.org/stable/c/6a1bcab67bea797d83aa9dd948a0ac6ed52d121d ↗
- https://git.kernel.org/stable/c/209fd720838aaf1420416494c5505096478156b4 ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html ↗