Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.3, < 6.6.136 |
References
- https://git.kernel.org/stable/c/0c739f3785f84af695952c2bac8be2f45082c9b8Patch
- https://git.kernel.org/stable/c/39897df386376912d561d4946499379effa1e7efPatch
- https://git.kernel.org/stable/c/900a4e0910e98b8caef117d5df00471fa438dcf9Patch
- https://git.kernel.org/stable/c/b9232421a77a649c9376c99fdfc8cb7f79cad34cPatch
- https://git.kernel.org/stable/c/bdf206e740bf2919d818f132c8c9cc7ed91d11c0Patch
FAQ
What is CVE-2026-31673?
CVE-2026-31673 is a vulnerability with a CVSS score of 7.8 (HIGH). 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....
How severe is CVE-2026-31673?
CVE-2026-31673 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-31673?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.