CVE-2021-28664
highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.054 · 93 %ileexploit · PoCEUUSadded 2021-11-03remediate by 2021-11-17
required action Apply updates per vendor instructions.
EPSS · scored 2026-10-27
Arm Mali Graphics Processing Unit (GPU) Unspecified Vulnerability
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
- woaphone/CVE-2021-28664-PoCA POC of CVE-2021-28664PoC · poc_in_github
affected products (4)
Products and version ranges known to be affected.
- arm bifrost gpu kernel driverr0p0 → r29p0nvdUScpe:2.3:a:arm:bifrost_gpu_kernel_driver:*:*:*:*:*:*:*:*
- arm midgard gpu kernel driverr8p0 → r31p0nvdUScpe:2.3:a:arm:midgard_gpu_kernel_driver:*:*:*:*:*:*:*:*
- arm valhall gpu kernel driverr19p0 → r29p0nvdUScpe:2.3:a:arm:valhall_gpu_kernel_driver:*:*:*:*:*:*:*:*
advisories (1)
Vendor and ecosystem advisories describing this.
- ASB-A-1745888702021-05-01vendor · osvUS
In kbase_mem_flags_change of mali_kbase_mem_linux.c, there is a possible overlapping kernel memory regions due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (14)
External citations — patches, advisories, analysis.
- https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilitiescnnvd
- https://developer.arm.com/support/arm-security-updatescnnvd
- https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-drivercnnvd
- https://device.harmonyos.com/cn/docs/security/update/security-bulletins-phones-202106-0000001165452077cnnvd
- https://source.android.com/security/bulletin/2021-05-01Patchcnnvd
- https://vigilance.fr/vulnerability/Google-Android-Pixel-multiple-vulnerabilities-of-May-2021-35227cnnvd
- https://www.cybersecurity-help.cz/vdb/SB2021052006cnnvd
- https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilitiesenisa_euvd
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