Privilege escalation in ARM Mali GPU kernel drivers



Published: 2023-04-04
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-46891
CWE-ID CWE-416
Exploitation vector Local
Public exploit N/A
Vulnerable software
Subscribe 		Midgard GPU Kernel Driver
Hardware solutions / Drivers

Bifrost GPU Kernel Driver
Hardware solutions / Drivers

Valhall GPU Kernel Driver
Hardware solutions / Drivers

Vendor ARM

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Use-after-free

EUVDB-ID: #VU74387

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-46891

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error. A local application can execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Midgard GPU Kernel Driver: All versions

Bifrost GPU Kernel Driver: before r41p0

Valhall GPU Kernel Driver: before r41p0

CPE2.3 External links

http://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities


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.



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