SB20260919179 - Use-after-free in Linux kernel drm v3d driver

Description

This security bulletin contains information about 1 vulnerability.

1) Use-after-free (CVE-ID: CVE-2026-93192)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to compromise system confidentiality, integrity, and availability.

The vulnerability exists due to failure to clear a dangling active-job pointer in the Linux kernel V3D driver's BIN, RENDER, TFU, and CSD job execution callbacks when v3d_fence_create() fails during job execution. A local user can exploit the stale queue->active_job reference to compromise system confidentiality, integrity, and availability.

The BIN queue's active-job reference can also be accessed concurrently by v3d_overflow_mem_work().

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/0b9878aba5cf93bc2b55ba9eb807757ce3239bec
• https://git.kernel.org/stable/c/25a1669907512e927fab9ad4d4fb74ff57f63cd9
• https://git.kernel.org/stable/c/3a8aa74859dd73eaa76c55eb74da708e56ef51c5
• https://git.kernel.org/stable/c/bdeb73d7312100e00c3e643ff233f09b6ec114aa