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CVE-2026-43237

kernel: drm/amdgpu: Refactor amdgpu_gem_va_ioctl for Handling Last Fence Update and Timeline Management v4

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Severity

Important

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · May 6, 2026

Updated · October 10, 2026

Description

A flaw was found in the Linux kernel's AMD GPU (amdgpu) driver. Incorrect management of graphics memory (dma_fence) references within the amdgpu_gem_va_ioctl function can lead to a reference count underflow and a use-after-after-free condition. A local attacker could exploit this vulnerability to trigger a kernel panic, causing the system to crash and resulting in a denial of service.

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-911 · Improper Update of Reference Count