Description
In the Linux kernel, the following vulnerability has been resolved: af_unix: read UNIX_DIAG_VFS data under unix_state_lock Exact UNIX diag lookups hold a reference to the socket, but not to u->path. Meanwhile, unix_release_sock() clears u->path under unix_state_lock() and drops the path reference after unlocking. Read the inode and device numbers for UNIX_DIAG_VFS while holding unix_state_lock(), then emit the netlink attribute after dropping the lock. This keeps the VFS data stable while the reply is being built.
Affected products
linux: linux kernel
References9
- git.kernel.org/stable/c/0c739f3785f84af695952c2bac8be2f45082c9b8 Patch
- git.kernel.org/stable/c/39897df386376912d561d4946499379effa1e7ef Patch
- git.kernel.org/stable/c/900a4e0910e98b8caef117d5df00471fa438dcf9 Patch
- git.kernel.org/stable/c/b9232421a77a649c9376c99fdfc8cb7f79cad34c Patch
- git.kernel.org/stable/c/bdf206e740bf2919d818f132c8c9cc7ed91d11c0 Patch
- git.kernel.org/stable/c/4f6a8f10182c3a9d22e8eb183957ae7ade9e4bf7
- git.kernel.org/stable/c/c3ec44ab4526bbc4b6c9fc845af86488244f4c9b
- git.kernel.org/stable/c/e7339db13b9ddb63417b12da55fd6191e59f7442
- cert-portal.siemens.com/productcert/html/ssa-784472.html
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 3 · as of 13 November 2026
- CWE
- CWE-362
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.