CVE-2021-28663 KEV
8.8
HIGH · CVSS 3.1 · EPSS 12.1% (pctl 96)
Patch first
On CISA KEV — known exploited in the wild, due 2021-11-17.
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.
Scoring
| CVSS | 8.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 12.08% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-416 |
| On CISA KEV | yes — remediate by 2021-11-17 |
| Public exploit | none known |
| Published | 2021-05-10 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Arm Mali Graphics Processing Unit (GPU) Use-After-Free Vulnerability |
|---|---|
| Added | 2021-11-03 |
| Due | 2021-11-17 |
| Vendor / product | Arm / Mali Graphics Processing Unit (GPU) |
| Ransomware use | none reported |
Affected (3)
| Vendor | Product |
|---|---|
| arm | bifrost gpu kernel driver |
| arm | midgard gpu kernel driver |
| arm | valhall gpu kernel driver |
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
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