CVE-2021-47332: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: ALSA: usx2y: Don't call free_pages_exact() with NULL address Unlike some other functions, we can't pass NULL pointer to free_pages_exact(). Add a proper NULL check for avoiding possible Oops.

Affected products

• Linux Linux Kernel: before 5.4.134 (fixed in 5.4.134); from 5.5, before 5.10.52 (fixed in 5.10.52); from 5.11, before 5.12.19 (fixed in 5.12.19); from 5.13, before 5.13.4 (fixed in 5.13.4)

Published 2024-05-21. Last modified 2026-06-17.