#VU74192 Out-of-bounds write in ARM products - CVE-2022-22706

Vulnerability identifier: #VU74192

Vulnerability risk: High

CVSSv4.0: 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/E:A/U:Amber]

CVE-ID: CVE-2022-22706

CWE-ID: CWE-787

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Midgard GPU Kernel Driver
Hardware solutions / Drivers
Bifrost GPU Kernel Driver
Hardware solutions / Drivers
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 boundary error. A local application can trigger an out-of-bounds write and execute arbitrary code with elevated privileges. This vulnerability was patched in Google Pixel and tracked under #VU64876 (CVE-2021-39793).

Note, the vulnerability is known to be exploited in the wild in targeted attacks.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Midgard GPU Kernel Driver: before r32p0

Bifrost GPU Kernel Driver: before r36p0

Valhall GPU Kernel Driver: before r36p0

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External links
https://developer.arm.com/support/arm-security-updates/mali-gpu-kernel-driver
https://blog.google/threat-analysis-group/spyware-vendors-use-0-days-and-n-days-against-popular-platforms/

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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?

Yes. This vulnerability is being exploited in the wild.