#VU76979 Use-after-free in Valhall GPU Kernel Driver and Arm 5th Gen GPU Architecture Kernel Driver - CVE-2023-28469

Vulnerability identifier: #VU76979

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-2023-28469

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Valhall GPU Kernel Driver
Hardware solutions / Drivers
Arm 5th Gen GPU Architecture Kernel Driver
Hardware solutions / Firmware

Vendor: ARM

Description

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

The vulnerability exists due to a use-after-free error. A malicious application can trigger a use-after-free error and execute arbitrary code on the device.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Valhall GPU Kernel Driver: before r43p0

Arm 5th Gen GPU Architecture Kernel Driver: before r43p0

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

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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.