CVE-2022-20421 — HIGH (7.8)

Vulnerability Description

In binder_inc_ref_for_node 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

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Google	Android	-
Debian	Debian Linux	10.0

Related Weaknesses (CWE)

CWE-416

References

https://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlMailing ListThird Party Advisory
https://source.android.com/security/bulletin/2022-10-01PatchVendor Advisory
https://www.debian.org/security/2022/dsa-5257Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlMailing ListThird Party Advisory
https://source.android.com/security/bulletin/2022-10-01PatchVendor Advisory
https://www.debian.org/security/2022/dsa-5257Third Party Advisory

FAQ

What is CVE-2022-20421?

CVE-2022-20421 is a vulnerability with a CVSS score of 7.8 (HIGH). In binder_inc_ref_for_node 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 need...

How severe is CVE-2022-20421?

CVE-2022-20421 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2022-20421?

Check the references section above for vendor advisories and patch information. Affected products include: Google Android, Debian Debian Linux.