Use-after-free in Valhall GPU Kernel Driver and ARM Avalon GPU Kernel Driver - CVE-2022-46394

Vulnerability identifier: #VU74389

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-2022-46394

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.

Valhall GPU Kernel Driver
ARM Avalon GPU Kernel Driver
Samsung Mobile Firmware
Google Android

Install updates from vendor's website.

Valhall GPU Kernel Driver - update to r42p0
ARM Avalon GPU Kernel Driver - update to r42p0
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
• https://developer.arm.com/support/arm-security-updates

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