SB20260507121 - Improper control of a resource through its lifetime in Linux kernel chips-media wave5 driver

Description

This security bulletin contains information about 1 vulnerability.

1) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-43229)

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

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 improper shutdown sequence in wave5 driver device removal handling when unregistering and removing the device during polling mode. A local user can trigger encoding operations and device removal to cause a denial of service.

The issue occurs because an hrtimer can continue queueing worker activity that reads hardware registers after the hardware has been powered down, leading to a bus error and kernel panic.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/526816f2e331954d80fed8b37fa94efbbdde2b8d
• https://git.kernel.org/stable/c/b73d85231d5b1400a4fa5046cdac6c4d7cc6d969
• https://git.kernel.org/stable/c/b74cedac643b02aefa7da881b58a3792859d9748
• https://git.kernel.org/stable/c/dc2b7deae740a3ed138fb7ae17c97fa4055cfc5f