SB20261022433 - Improper update of reference count in Linux kernel soc sdca

Description

This security bulletin contains information about 1 vulnerability.

1) Improper update of reference count (CVE-ID: CVE-2026-98817)

CWE-ID: CWE-911 - Improper Update of Reference Count

CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to potentially disrupt runtime power management and prevent an affected audio device from entering runtime suspend.

The vulnerability exists due to improper runtime power-management reference counting in class_function_probe() in the Linux kernel ASoC SDCA subsystem when device initialization fails. A local user can trigger a probe failure, if able to influence device initialization, to leave a runtime power-management reference unreleased and potentially prevent the device from suspending.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/1f90c62a2412b3b9af27e0d23e346efcf88d83bd
• https://git.kernel.org/stable/c/91094f9c86216898ce92141c26c8fec7e97544c0