CVE Database›CVE-2021-20292

CVE-2021-20292

kernel: DRM Memory Management Double Free Privilege Escalation Vulnerability

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Severity

Low

Red Hat Product Security

6.7

CVSS 3.1

Review impact separately from score.

Published · August 13, 2020

Updated · June 28, 2026

Description

There is a flaw reported in drivers/gpu/drm/nouveau/nouveau_sgdma.c in nouveau_sgdma_create_ttm in Nouveau DRM subsystem. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker with a local account with a root privilege, can leverage this vulnerability to escalate privileges and execute code in the context of the kernel.

Statement

There was no shipped kernel version were seen affected with this problem, CONFIG_FAULT_INJECTION is disabled on all versions of RHEL.

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 · 6.7
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CWE-416 · Use After Free