CVE-2023-52806: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: Fix possible null-ptr-deref when assigning a stream While AudioDSP drivers assign streams exclusively of HOST or LINK type, nothing blocks a user to attempt to assign a COUPLED stream. As supplied substream instance may be a stub, what is the case when code-loading, such scenario ends with null-ptr-deref.

Affected products

• Linux Linux Kernel: before 4.14.331 (fixed in 4.14.331); from 4.15, before 4.19.300 (fixed in 4.19.300); from 4.20, before 5.4.262 (fixed in 5.4.262); from 5.5, before 5.10.202 (fixed in 5.10.202); from 5.11, before 5.15.140 (fixed in 5.15.140); from 5.16, before 6.1.64 (fixed in 6.1.64); …

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