CVE-2021-28664
Arm Mali Graphics Processing Unit (GPU) Unspecified Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 17 November 2021). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
The Arm Mali GPU kernel driver allows privilege escalation or a denial of service (memory corruption) because an unprivileged user can achieve read/write access to read-only pages. This affects Bifrost r0p0 through r29p0 before r30p0, Valhall r19p0 through r29p0 before r30p0, and Midgard r8p0 through r30p0 before r31p0.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 5.41% probability · 93th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 3 November 2021 · due 17 November 2021
- Weakness
- CWE-787
- Affected
- arm/bifrost gpu kernel driver · arm/midgard gpu kernel driver · arm/valhall gpu kernel driver
- Source
- cve@mitre.org
EPSS 5.4% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2021-28664
References
- https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20VulnerabilitiesVendor Advisory
- https://developer.arm.com/support/arm-security-updatesVendor Advisory
- https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driverVendor Advisory
- https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20VulnerabilitiesVendor Advisory
- 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-2021-28664US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.