SB20260507202 - NULL pointer dereference in Linux kernel sof intel

Description

This security bulletin contains information about 1 vulnerability.

1) NULL pointer dereference (CVE-ID: CVE-2026-43137)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 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

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.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/10411f1f2c76be67103b1f95822ff629aa25e2aa
• https://git.kernel.org/stable/c/16c589567a956d46a7c1363af3f64de3d420af20
• https://git.kernel.org/stable/c/42068f7dd42b559c4eeae645e1455ff36518866a
• https://git.kernel.org/stable/c/7750d78b4014902bc0ac03d4bb30faa076a913ab