CVE-2021-28664: Arm Mali Graphics Processing Unit (GPU) Unspecified Vulnerability
Vulnerability summary
CVE-2021-28664 is a high (CVSS 9.0) Out-of-bounds Write vulnerability in Arm Mali Graphics Processing Unit (GPU). It is known to be exploited: CISA lists it, first on 03-11-2021. EPSS estimates a 5.41% chance of exploitation in the next 30 days, higher than 92.6% of scored vulnerabilities.
Timeline
- 10-05-2021PublishedVulnerability first disclosed.
- 03-11-2021Added to CISA KEVArm Mali Graphics Processing Unit (GPU) Unspecified Vulnerability
- 17-11-2021CISA remediation dueApply updates per vendor instructions.
- 21-10-2025Last modifiedVulnerability information updated.
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 metrics
3 scores · 2 sources · 2 versions- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
5.41%
Chance of exploitation in the next 30 days
Percentile
93%
Versus all other CVEs
30-day change
0.00 pp
From 5.41% on 19-09-2026
Known exploited
Compare KEV catalogs
CISA KEVListed- Added
- 03-11-2021
- Federal due date
- 17-11-2021
CISA required action
Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2021-28664
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Arm3 products
- bifrost_gpu_kernel_driver≥ r0p0, < r29p0
- midgard_gpu_kernel_driver≥ r8p0, < r31p0
- valhall_gpu_kernel_driver≥ r19p0, < r29p0
1 vendor · 3 products
References
4 links- developer.arm.com/support/arm-security-updatesVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28664Government ResourceUS Government Resource