CVE-2025-37776: Linux Kernel

High severity, CVSS 7.0. 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 smb_break_all_levII_oplock() There is a room in smb_break_all_levII_oplock that can cause racy issues when unlocking in the middle of the loop. This patch use read lock to protect whole loop.

Affected products

• Linux Linux Kernel: from 5.15, before 6.6.88 (fixed in 6.6.88); from 6.7, before 6.12.25 (fixed in 6.12.25); from 6.13, before 6.14.4 (fixed in 6.14.4); version 6.15 only

Published 2025-05-01. Last modified 2026-07-30.