Home/CVE/Arm Mali Graphics Processing Unit (GPU) Use-After-Free Vulnerability
CVE

CVE-2021-28663

Arm Mali Graphics Processing Unit (GPU) Use-After-Free Vulnerability

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.

HIGH · CVSS 8.8 ⚠ CISA KEV EPSS 0.03621
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬢

Required Remediation

Apply updates per vendor instructions.

⬡

Weakness Classification

CWE-416Use After Free
CWE-416Use After Free
▤

Affected Products & Versions

3
arm bifrost gpu kernel driver>= r0p0 and < r29p0
arm midgard gpu kernel driver>= r4p0 and < r31p0
arm valhall gpu kernel driver>= r19p0 and < r29p0
⚠

Public Exploits & PoCs

1
pocgithub.com · CVE-2021-28663github.com
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD10 May 2021 · 03:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

2
cisaKEV-CVE-2021-28663
android-securityANDROID-2021-05-01High
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://developer.arm.com/support/arm-security-updatesVendor Advisory
https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driverVendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28663US Government Resource
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