#VU74386 Use-after-free in Valhall GPU Kernel Driver - CVE-2022-42716

Vulnerability identifier: #VU74386

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-2022-42716

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
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 use-after-free error. A local application can execute arbitrary code with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Valhall GPU Kernel Driver: before r41p0

---

External links
https://developer.arm.com/Arm%20Security%20Center/Mali%20GPU%20Driver%20Vulnerabilities
https://packetstormsecurity.com/files/170420/Arm-Mali-CSF-KBASE_REG_NO_USER_FREE-Unsafe-Use-Use-After-Free.html

---

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.