Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_expect: use expect->helper Use expect->helper in ctnetlink and /proc to dump the helper name. Using nfct_help() without holding a reference to the master conntrack is unsafe. Use exp->master->helper in ctnetlink path if userspace does not provide an explicit helper when creating an expectation to retain the existing behaviour. The ctnetlink expectation path holds the reference on the master conntrack and nf_conntrack_expect lock and the nfnetlink glue path refers to the master ct that is attached to the skb.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.30, < 6.1.168 |
References
- https://git.kernel.org/stable/c/3dfd3f7712b5a800f2ba632179e9b738076a51f0Patch
- https://git.kernel.org/stable/c/4bd1b3d839172724b33d8d02c5a4ff6a1c775417Patch
- https://git.kernel.org/stable/c/847cb7fe26c5ce5dce0d1a41fac1ea488b7f1781Patch
- https://git.kernel.org/stable/c/b53294bff19e56ada2f230ceb8b1ffde61cc3817Patch
- https://git.kernel.org/stable/c/e7ccaa0a62a8ff2be5d521299ce79390c318d306Patch
- https://git.kernel.org/stable/c/f01794106042ee27e54af6fdf5b319a2fe3df94dPatch
FAQ
What is CVE-2026-31414?
CVE-2026-31414 is a vulnerability with a CVSS score of 9.8 (CRITICAL). In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_expect: use expect->helper Use expect->helper in ctnetlink and /proc to dump the helper name. Using nfct_h...
How severe is CVE-2026-31414?
CVE-2026-31414 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-31414?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.