Use-after-free in Arm Mali GPU kernel drivers

1) Use-after-free

EUVDB-ID: #VU87036

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-2023-6143

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error. A local user can trigger a use-after-free error and execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Midgard GPU Kernel Driver: r13p0 - r32p0

Valhall GPU Kernel Driver: r37p0 - r46p0

Arm 5th Gen GPU Architecture Kernel Driver: r41p0 - r46p0

Bifrost GPU Kernel Driver: before r19p0

CPE2.3

• cpe:2.3:h:arm:midgard_gpu_kernel_driver:r13p0:*:*:*:*:*:*:*
• cpe:2.3:h:arm:midgard_gpu_kernel_driver:r14p0:*:*:*:*:*:*:*
• cpe:2.3:h:arm:midgard_gpu_kernel_driver:r15p0:*:*:*:*:*:*:*
• cpe:2.3:h:arm:valhall_gpu_kernel_driver:r37p0:*:*:*:*:*:*:*
• cpe:2.3:h:arm:valhall_gpu_kernel_driver:r38p0:*:*:*:*:*:*:*
• cpe:2.3:h:arm:valhall_gpu_kernel_driver:r38p1:*:*:*:*:*:*:*
• cpe:2.3:h:arm:arms_gpu_architecture_gen5_kernel_driver:r41p0:*:*:*:*:*:*:*
• cpe:2.3:h:arm:arms_gpu_architecture_gen5_kernel_driver:r42p0:*:*:*:*:*:*:*
• cpe:2.3:h:arm:arms_gpu_architecture_gen5_kernel_driver:r43p0:*:*:*:*:*:*:*
• cpe:2.3:h:arm:bifrost_gpu_kernel_driver:*:*:*:*:*:*:*:*

External links

https://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.