Privilege Escalation Vulnerability in Arm Mali GPU Kernel Driver
CVE-2021-28663

8.8HIGH

Key Information:

Vendor
Arm
Status
Bifrost Gpu Kernel Driver
Valhall Gpu Kernel Driver
Midguard Gpu Kernel Driver
Vendor
CVE Published:
10 May 2021

Badges

👾 Exploit Exists🟡 Public PoC🦅 CISA Reported

Summary

The Arm Mali GPU kernel driver contains a vulnerability that allows for privilege escalation and potential information disclosure. This situation arises due to improper handling of GPU memory operations, specifically leading to a use-after-free condition. This can affect various versions of the Bifrost, Valhall, and Midgard GPU architectures, making them susceptible to exploitation if not addressed. Users are encouraged to update to the latest driver versions to mitigate these risks.

CISA Reported

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Apply updates per vendor instructions.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-28663
Created by lntrx

References

https://developer.arm.com/support/arm-security-updates
https://developer.arm.com/support/arm-security-updates/ma...
https://github.com/lntrx/CVE-2021-28663

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🦅

    CISA Reported

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.