Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_CT: drop pending enqueued packets on template removal Templates refer to objects that can go away while packets are sitting in nfqueue refer to: - helper, this can be an issue on module removal. - timeout policy, nfnetlink_cttimeout might remove it. The use of templates with zone and event cache filter are safe, since this just copies values. Flush these enqueued packets in case the template rule gets removed.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.4.1, < 5.10.253 |
References
- https://git.kernel.org/stable/c/19a230dec6bb8928e3f96387f9085cf2c79bcef9Patch
- https://git.kernel.org/stable/c/55445134d42b84cb0a272e42c98d233ca65eca83Patch
- https://git.kernel.org/stable/c/63b8097cea1923fe82cd598068d0796da8c015ecPatch
- https://git.kernel.org/stable/c/777d02efe3d630cca4c1b63962cec17c57711325Patch
- https://git.kernel.org/stable/c/cb549925875fa06dd155e49db4ac2c5044c30f9cPatch
- https://git.kernel.org/stable/c/cc57506dd66555899560b9c0f24e813f034e12ecPatch
- https://git.kernel.org/stable/c/d2d0bae0c9a2a17b6990a2966f5cdce0813d6256Patch
- https://git.kernel.org/stable/c/f62a218a946b19bb59abdd5361da85fa4606b96bPatch
FAQ
What is CVE-2026-23391?
CVE-2026-23391 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_CT: drop pending enqueued packets on template removal Templates refer to objects that can go away while packets are ...
How severe is CVE-2026-23391?
CVE-2026-23391 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-2026-23391?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.