CVE-2021-28663
Published 2021-05-10 · Updated 2026-06-17 · Source cve@mitre.org
Summary
CVE-2021-28663 is a high-severity (CVSS 8.8) vulnerability in Arm Mali Graphics Processing Unit (GPU). CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by November 17, 2021. CISA does not currently list it as used in ransomware campaigns. Arm has 9 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.
All 9 known-exploited Arm vulnerabilities →Description
The Arm Mali GPU kernel driver allows privilege escalation or information disclosure because GPU memory operations are mishandled, leading to a use-after-free. This affects Bifrost r0p0 through r28p0 before r29p0, Valhall r19p0 through r28p0 before r29p0, and Midgard r4p0 through r30p0.
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA Known-Exploited Vulnerability
Product: Arm — Mali Graphics Processing Unit (GPU)
Name: Arm Mali Graphics Processing Unit (GPU) Use-After-Free Vulnerability
Date added: 2021-11-03 · Due: 2021-11-17
Required action: Apply updates per vendor instructions.
References
- https://developer.arm.com/support/arm-security-updates
- https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driver
- https://github.com/lntrx/CVE-2021-28663
- https://developer.arm.com/support/arm-security-updates
- https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driver
- https://github.com/lntrx/CVE-2021-28663
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28663