Use-after-free in ARM products - CVE-2022-46891

Vulnerability identifier: #VU74387

CSH Severity: Low

CVSS v4: 8.5 [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]

CVE-ID: CVE-2022-46891

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

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.

Midgard GPU Kernel Driver
Bifrost GPU Kernel Driver
Valhall GPU Kernel Driver
Samsung Mobile Firmware
Google Android

Install updates from vendor's website.

Bifrost GPU Kernel Driver - update to r41p0
Valhall GPU Kernel Driver - update to r41p0
Samsung Mobile Firmware - update to SMR-JUN-2023
Google Android - addressed in versions 11 2023-05-05, 12L 2023-05-05, 12 2023-05-05, 13 2023-05-05

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

• Privilege escalation in ARM Mali GPU kernel drivers
• Multiple vulnerabilities in Google Android
• Multiple vulnerabilities in Samsung Mobile Firmware