CVE-2025-40286: Linux

EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: smb/server: fix possible memory leak in smb2_read() Memory leak occurs when ksmbd_vfs_read() fails. Fix this by adding the missing kvfree().

Affected products

• Linux Linux: from 5.15, before 6.1.159 (fixed in 6.1.159); from 6.2, before 6.6.117 (fixed in 6.6.117); from 6.7, before 6.12.59 (fixed in 6.12.59); from 6.13, before 6.17.9 (fixed in 6.17.9)

Published 2025-12-06. Last modified 2026-06-17.