SB2023033024 - Privilege escalation in ARM Mali GPU kernel drivers

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds write (CVE-ID: CVE-2022-22706)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 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

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.

Remediation

Install update from vendor's website.

References

• 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/