SB2026040659 - Race condition in Linux kernel drm imagination driver

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-23469)

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:H/SC:N/SI:N/SA:N/E:U/U:Clear

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

The vulnerability exists due to a race condition in the drm/imagination GPU driver interrupt handling during runtime power management suspend when suspending the GPU while an IRQ handler is still running on another CPU core. A local attacker can trigger GPU activity that races with runtime suspend to cause a denial of service.

This issue can lead to kernel crashes or a kernel panic when the IRQ handler accesses GPU registers while the GPU is suspended.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/2d7f05cddf4c268cc36256a2476946041dbdd36d
• https://git.kernel.org/stable/c/772f3653eef50ea7cf721b05d8e275f93bc460f3
• https://git.kernel.org/stable/c/8e0c15e426a056b9fb604cf87a1dfdec4d61e407