CVE-2025-21844: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.6% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: smb: client: Add check for next_buffer in receive_encrypted_standard() Add check for the return value of cifs_buf_get() and cifs_small_buf_get() in receive_encrypted_standard() to prevent null pointer dereference.

Affected products

• Linux Linux Kernel: from 6.1.69, before 6.1.130 (fixed in 6.1.130); from 6.6.8, before 6.6.80 (fixed in 6.6.80); from 6.7, before 6.12.17 (fixed in 6.12.17); from 6.13, before 6.13.5 (fixed in 6.13.5); version 5.10.211 only; version 5.15.150 only; …

Published 2025-03-12. Last modified 2026-07-30.