CVE-2021-29256

Published: May 24, 2021Modified: Jun 17, 2026CISA KEV

8.8

Vector

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

Exploitability: 2.8 / Impact: 5.9

Source: NVD

Description

. The Arm Mali GPU kernel driver allows an unprivileged user to achieve access to freed memory, leading to information disclosure or root privilege escalation. This affects Bifrost r16p0 through r29p0 before r30p0, Valhall r19p0 through r29p0 before r30p0, and Midgard r28p0 through r30p0.

Affected (3)

Products: Arm: Bifrost Gpu Kernel Driver, Midgard Gpu Kernel Driver, Valhall Gpu Kernel Driver

3 products

Bifrost Gpu Kernel Driver

Midgard Gpu Kernel Driver

Valhall Gpu Kernel Driver

Configuration A

3 vulnerable

Vulnerable Software	Affected Versions
Arm Bifrost Gpu Kernel Driver	From r16p0 to r30p0
Arm Midgard Gpu Kernel Driver	From r28p0 to r31p0
Arm Valhall Gpu Kernel Driver	From r19p0 to r30p0

Related CWEs

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (3)

https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driver

Source: cve@mitre.org

Vendor Advisory

https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driver

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-29256

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

Timeline

No history available yet.