NULL pointer dereference in Linux kernel - CVE-2026-43137
Published: May 7, 2026
Vulnerability identifier: #VU130595
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-43137
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a null pointer dereference in hda_dai_get_ops in the snd_sof_intel_hda_common component when processing mismatched DAI links and topology data. A local user can trigger a broken topology configuration to cause a denial of service.
The issue can occur when the playback or capture widget is not set, including loopback capture for echo reference using the dummy DAI link.
How to mitigate CVE-2026-43137
Install security update from vendor's repository.