CVE-2022-20567: Use After Free
First published: Fri Dec 16 2022(Updated: )
In pppol2tp_create of l2tp_ppp.c, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-186777253References: Upstream kernel
Credit: security@android.com security@android.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Android | ||
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.19-1 6.12.20-1 |
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Reference Links
- https://source.android.com/security/bulletin/pixel/2022-12-01
- https://launchpad.net/bugs/cve/CVE-2022-20567
- https://git.kernel.org/linus/d02ba2a6110c530a32926af8ad441111774d2893
- https://security-tracker.debian.org/tracker/CVE-2022-20567
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-20567
- https://nvd.nist.gov/vuln/detail/CVE-2022-20567
- https://ubuntu.com/security/CVE-2022-20567
Frequently Asked Questions
What is the severity of CVE-2022-20567?
CVE-2022-20567 is classified as a local escalation of privilege vulnerability.
How do I fix CVE-2022-20567?
To mitigate CVE-2022-20567, ensure your Android system or Debian Linux package is updated to the recommended patched versions.
Which versions are affected by CVE-2022-20567?
CVE-2022-20567 affects certain versions of the Android kernel and specific versions of Debian Linux packages.
What could be the impact of CVE-2022-20567?
Exploitation of CVE-2022-20567 could lead to unauthorized local escalation of privileges.
Is user interaction required for CVE-2022-20567 exploitation?
No, user interaction is not needed for the exploitation of CVE-2022-20567.
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