Is CVE-2021-28664 actively exploited?

CVE-2021-28664 has no public evidence of in-the-wild exploitation as of 2025-11-03.

What is the CVSS score for CVE-2021-28664?

CVE-2021-28664 has a CVSS score of 8.8 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2021-28664?

Patch guidance is available from arm security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-28664.

Fix CVE-2021-28664 - HIGH arm bifrost gpu kernel driver

Q: Which products are affected by CVE-2021-28664?

3 products: arm bifrost gpu kernel driver, arm midgard gpu kernel driver, arm valhall gpu kernel driver.

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

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-787 · Out-of-bounds Write CWE-787 · Out-of-bounds Write

Metadata

Primary Vendor: ARM
Published: 5/10/2021
Last Modified: 11/3/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

arm : bifrost_gpu_kernel_driverarm : midgard_gpu_kernel_driverarm : valhall_gpu_kernel_driver

Remediation Guidance

Executive Summary

View on NIST NVD