SB20260812302 - Race condition in Linux kernel chips-media wave5 driver

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-68228)

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

CVSSv4: 6.8 [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]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper state management in the wave5 encoder buffer handling in drivers/media/platform/chips-media/wave5/wave5-vpu-enc.c when processing encoder completion and re-queuing buffers. A local user can queue the same buffer before it is removed from the m2m ready queue to cause a denial of service.

The issue can result in a self-referential ready-queue entry, after which list pointers are poisoned when the entry is deleted.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/1ee2b2b189ddc7b23c8eee1145de42b8bd19fb06
• https://git.kernel.org/stable/c/b20157147089a9c16a38c7810e2fe6f2df8e3277
• https://git.kernel.org/stable/c/d681227ce43bfd74b6eb69beecd9b0bec1fd8b48
• https://git.kernel.org/stable/c/f24ca8b53fe15db40957bdaa40c9aa68e1557bbe