CVE-2022-20421: Use After Free
In binderincreffornode of binder.c, there is a possible way to corrupt memory due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-239630375References: Upstream kernel
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.223-1Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.25-1
Event History
Frequently Asked Questions
What is the severity of CVE-2022-20421?
CVE-2022-20421 is a medium severity vulnerability that allows local escalation of privilege due to a use after free error.
How do I fix CVE-2022-20421?
To mitigate CVE-2022-20421, update your system to the latest kernel versions specified by your Linux distribution.
Who is affected by CVE-2022-20421?
CVE-2022-20421 affects users of Android and specific Debian Linux versions, particularly 10.0 and 11.0.
What types of devices are impacted by CVE-2022-20421?
CVE-2022-20421 impacts devices running the Google Android kernel and certain Debian-based systems.
Is user interaction necessary to exploit CVE-2022-20421?
No, user interaction is not required to exploit CVE-2022-20421, making it potentially more dangerous.