HIGHCVE-2026-23391Published Modified CNA Linux
CVE-2026-23391: netfilter: xt_CT: drop pending enqueued packets on template removal
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.
Metrics
- CVSS v3.1
- 7.8
- Severity
- HIGH
- Fixed in
- 0
- Affected Products
- 2
Fix available
019a230dec6bb8928e3f96387f9085cf2c79bcef95.10.2535.15.20355445134d42b84cb0a272e42c98d233ca65eca836.1.1676.6.1306.12.786.18.206.19.1063b8097cea1923fe82cd598068d0796da8c015ec7.0777d02efe3d630cca4c1b63962cec17c57711325cb549925875fa06dd155e49db4ac2c5044c30f9ccc57506dd66555899560b9c0f24e813f034e12ecd2d0bae0c9a2a17b6990a2966f5cdce0813d6256f62a218a946b19bb59abdd5361da85fa4606b96b
Affected packages
- Linux / Linux< 55445134d42b84cb0a272e42c98d233ca65eca83 (from 24de58f465165298aaa8f286b2592f0163706cfe) · < cc57506dd66555899560b9c0f24e813f034e12ec (from 24de58f465165298aaa8f286b2592f0163706cfe) · < d2d0bae0c9a2a17b6990a2966f5cdce0813d6256 (from 24de58f465165298aaa8f286b2592f0163706cfe) · < 63b8097cea1923fe82cd598068d0796da8c015ec (from 24de58f465165298aaa8f286b2592f0163706cfe) · < 19a230dec6bb8928e3f96387f9085cf2c79bcef9 (from 24de58f465165298aaa8f286b2592f0163706cfe) · < cb549925875fa06dd155e49db4ac2c5044c30f9c (from 24de58f465165298aaa8f286b2592f0163706cfe)
- Linux / Linux3.4Fixed in 0, 5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78, 6.18.20, 6.19.10, 7.0
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H