CVE Database›Document archive›CVE-2026-43396

CVE-2026-43396

kernel: drm/xe/sync: Fix user fence leak on alloc failure

Loading…

Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · May 8, 2026

Updated · October 29, 2026

Description

A flaw was found in the Linux kernel, specifically within the drm/xe/sync component. When the dma_fence_chain_alloc() function fails, the user fence reference is not properly released, resulting in a memory leak. This issue could lead to system instability or denial of service.

Statement

This Moderate impact memory leak in the drm/xe/sync component of the Linux kernel can lead to a denial of service. The flaw occurs when a user fence reference is not properly released upon dma_fence_chain_alloc() failure. Exploitation requires local access and low privileges, potentially causing system instability on affected Red Hat Enterprise Linux 9 and 10 systems.

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

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-772 · Missing Release of Resource after Effective Lifetime