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CVE-2026-31766

kernel: drm/amdgpu: validate doorbell_offset in user queue creation

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Severity

Important

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · May 1, 2026

Updated · October 1, 2026

Description

A flaw was found in the Linux kernel's AMD GPU (amdgpu) driver. A local user could exploit this vulnerability by providing a malformed doorbell offset during user queue creation. This lack of proper bounds checking allows the offset to exceed the allocated memory, potentially corrupting critical kernel memory. This could lead to a system crash (Denial of Service) or, in some scenarios, privilege escalation.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-1285 · Improper Validation of Specified Index, Position, or Offset in Input