SB2026050996 - Race condition in Linux kernel chips-media wave5 driver

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-43293)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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 race condition in the wave5 driver kthread worker cleanup logic when removing the module in polling mode. A local user can trigger module removal in polling mode to cause a denial of service.

The issue occurs when irq is less than 0 and the hrtimer can queue new work during worker destruction, leading to a kernel warning.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/0c2e752688a0ee3b89993e6de6c496d863870c93
• https://git.kernel.org/stable/c/156020e889edf4593870d926d3c4a6d06baac44a
• https://git.kernel.org/stable/c/5a0c122e834b2f7f029526422c71be922960bf03
• https://git.kernel.org/stable/c/cc8071b1bac6568ea09d54be2d4f74dba80e17f8