CVE-2022-50866
kernel: ASoC: pxa: fix null-pointer dereference in filter()
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 30, 2025
Updated · June 30, 2026
Description
A flaw was found in the Linux kernel ASoC pxa audio driver. The function filter() used kasprintf() to allocate a formatted string but did not check whether the allocation succeeded before passing the result to strcmp(). If memory allocation fails and kasprintf() returns NULL, this results in a NULL pointer dereference when calling strcmp(), which can trigger a kernel crash and denial of service.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 4.5CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE-476 · NULL Pointer Dereference