#VU81405 Buffer overflow in ARM products - CVE-2021-44828

Vulnerability identifier: #VU81405

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-44828

CWE-ID: CWE-119

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Midgard GPU Kernel Driver
Hardware solutions / Drivers
Bifrost GPU Kernel Driver
Hardware solutions / Drivers
Valhall GPU Kernel Driver
Hardware solutions / Drivers

Vendor: ARM

Description

The vulnerability allows a local application to escalate privileges on the system.

The vulnerability exists due to a boundary error. A local application can trigger memory corruption and execute arbitrary code with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Midgard GPU Kernel Driver: before r32p0

Bifrost GPU Kernel Driver: before r35p0

Valhall GPU Kernel Driver: before r35p0

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External links
https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driver

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.