CVE-2021-29256

. 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.

CVSS v3 8.8 HIGH
CVSS v2.0 9.0 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:S/C:C/I:C/A:C

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driver	Vendor Advisory
https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driver	Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-29256	US Government Resource

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:arm:bifrost_gpu_kernel_driver::::::::
	cpe:2.3:a:arm:midgard_gpu_kernel_driver::::::::
	cpe:2.3:a:arm:valhall_gpu_kernel_driver::::::::

History

03 Nov 2025, 15:16

Type	Values Removed	Values Added
References	~~() https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-29256 -~~	() https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-29256 - US Government Resource

Information

Published : 2021-05-24 18:15

Updated : 2025-11-03 15:16

NVD link : CVE-2021-29256

Mitre link : CVE-2021-29256

CVE.ORG link : CVE-2021-29256

JSON object : View

Products Affected

arm

valhall_gpu_kernel_driver
bifrost_gpu_kernel_driver
midgard_gpu_kernel_driver

CWE

CWE-416

Use After Free

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