CVE-2025-68817: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency Under high concurrency, A tree-connection object (tcon) is freed on a disconnect path while another path still holds a reference and later executes *_put()/write on it.

Affected products

• Linux Linux Kernel: from 5.15.145, before 5.15.199 (fixed in 5.15.199); from 6.1.71, before 6.1.160 (fixed in 6.1.160); from 6.6.1, before 6.6.120 (fixed in 6.6.120); from 6.7, before 6.12.64 (fixed in 6.12.64); from 6.13, before 6.18.3 (fixed in 6.18.3); version 6.6 only

Published 2026-01-13. Last modified 2026-07-30.