CVE-2021-47307: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.7% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: cifs: prevent NULL deref in cifs_compose_mount_options() The optional @ref parameter might contain an NULL node_name, so prevent dereferencing it in cifs_compose_mount_options(). Addresses-Coverity: 1476408 ("Explicit null dereferenced")

Affected products

• Linux Linux Kernel: before 5.4.135 (fixed in 5.4.135); from 5.5, before 5.10.53 (fixed in 5.10.53); from 5.11, before 5.13.5 (fixed in 5.13.5)

Published 2024-05-21. Last modified 2026-08-04.