CVE-2021-28664 on CISA KEV

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

01What CISA says about this 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.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• developer.arm.com — https://developer.arm.com/support/arm-security-updates
• developer.arm.com — https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driver
• developer.arm.com — https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerab…

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
n	a / n/a	n/a

06Detection

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