Use-after-free in Google Android - CVE-2021-28663
Published: May 20, 2021 / Updated: September 2, 2021
Vulnerability identifier: #VU53389
CSH Severity: High
CVSS v4.0: 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-2021-28663
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: Google
Affected software:
Google Android
Google Android
Detailed vulnerability description
The vulnerability allows a local application to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the Arm Mali GPU kernel driver. This affects Bifrost r0p0 through r28p0 before r29p0, Valhall r19p0 through r28p0 before r29p0, and Midgard r4p0 through r30p0. A local application can trigger a use-after-free error and execute arbitrary code on the system with elevated privileges.
Note, the vulnerability is being actively exploited in the wild.
How to mitigate CVE-2021-28663
Install updates from vendor's website.