CVE-2026-31673
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.1% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Weakness
- CWE-362 · Race condition
- Record status
- Modified
Affected
- Linux Kernel < 6.6.136
- Linux Kernel < 6.12.83
- Linux Kernel < 6.18.24
- Linux Kernel < 6.19.14
- Linux Kernel 7.0
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-31673.md and follow it. Check whether this project is affected by CVE-2026-31673. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/0c739f3785f84af695952c2bac8be2f45082c9b8
- https://git.kernel.org/stable/c/39897df386376912d561d4946499379effa1e7ef
- https://git.kernel.org/stable/c/900a4e0910e98b8caef117d5df00471fa438dcf9
- https://git.kernel.org/stable/c/b9232421a77a649c9376c99fdfc8cb7f79cad34c
- https://git.kernel.org/stable/c/bdf206e740bf2919d818f132c8c9cc7ed91d11c0
References
- https://git.kernel.org/stable/c/0c739f3785f84af695952c2bac8be2f45082c9b8
- https://git.kernel.org/stable/c/39897df386376912d561d4946499379effa1e7ef
- https://git.kernel.org/stable/c/4f6a8f10182c3a9d22e8eb183957ae7ade9e4bf7
- https://git.kernel.org/stable/c/900a4e0910e98b8caef117d5df00471fa438dcf9
- https://git.kernel.org/stable/c/b9232421a77a649c9376c99fdfc8cb7f79cad34c
- https://git.kernel.org/stable/c/bdf206e740bf2919d818f132c8c9cc7ed91d11c0
- https://git.kernel.org/stable/c/c3ec44ab4526bbc4b6c9fc845af86488244f4c9b
- https://git.kernel.org/stable/c/e7339db13b9ddb63417b12da55fd6191e59f7442
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html