Race condition in Google Android - CVE-2022-20421
Published: October 4, 2022 / Updated: May 21, 2023
Vulnerability identifier: #VU67865
CSH Severity: Low
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:P/U:Clear
CVE-ID: CVE-2022-20421
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
Public exploit is available
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 race condition within the Binder driver in Android kernel in drivers/android/binder.c. A local application can exploit the race to trigger a use-after-free error and execute arbitrary code with elevated privileges.
How to mitigate CVE-2022-20421
Install updates from vendor's website.