CVE-2021-28663 kev in the critical feed json
The Arm Mali GPU kernel driver allows privilege escalation or information disclosure because GPU memory operations are mishandled, leading…
published 2021-05-10 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-15327
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Exploited
- added 2021-11-03
- epss
- 12.1%
- EPSS 12.1% chance of exploitation in 30 days, percentile 96%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
cisa required action Apply updates per vendor instructions.
- arm bifrost_gpu_kernel_driver r29p0
- arm midgard_gpu_kernel_driver r31p0
- arm valhall_gpu_kernel_driver r29p0
Timeline
- 0-day patched (Project Zero)
- Published
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 5 y ago
- Patch by
- 2021-11-17 (4 y ago)
- Ransomware
- Not known
- Required action
- Apply updates per vendor instructions.
- Vendor, product
- Arm, Mali Graphics Processing Unit (GPU)
- CISA name
- Arm Mali Graphics Processing Unit (GPU) Use-After-Free Vulnerability
Zero-day
Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.
- Patched
- 2021-05-03
- Details
- project zero tracker
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
12.08% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/lntrx/CVE-2021-28663 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
Affected products
- arm bifrost_gpu_kernel_driver
- arm valhall_gpu_kernel_driver
- arm midgard_gpu_kernel_driver
Classification
- Weakness
-
- CWE-416 Use After Free
References
-
github.com
/lntrx/CVE-2021-28663
exploit
-
developer.arm.com
/support/arm-security-updates
vendor-advisory
-
developer.arm.com
/support/arm-security-updates/mali-gpu-kernel-driver
vendor-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28663
government-resource, us-government-resource
Sources
- CVE List CVE-2021-28663
- NVD CVE-2021-28663
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.