arm bifrost-gpu-kernel-driver CVE-2021-28664 vulnerability in Arm Products
Published on May 10, 2021

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.

Vendor Advisory Vendor Advisory NVD

Known Exploited Vulnerability

This Arm Mali GPU Kernel Boundary Error Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. 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 r28p0 before r29p0, Valhall r19p0 through r28p0 before r29p0, and Midgard r8p0 through r30p0.

The following remediation steps are recommended / required by November 17, 2021: Apply updates per vendor instructions.

Vulnerability Analysis

CVE-2021-28664 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. It has an exploitability score of 2.8 out of four. The potential impact of an exploit of this vulnerability is considered to be very high.

What is a Memory Corruption Vulnerability?

The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.

CVE-2021-28664 has been classified to as a Memory Corruption vulnerability or weakness.


Products Associated with CVE-2021-28664

You can be notified by stack.watch whenever vulnerabilities like CVE-2021-28664 are published in these products:

Arm Bifrost Gpu Kernel Driver
 
Arm Midguard Gpu Kernel Driver
 
Arm Valhall Gpu Kernel Driver
 
Arm Midgard Gpu Kernel Driver
 

What versions are vulnerable to CVE-2021-28664?