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CVE-2022-20421

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Date: October 10, 2022

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

Language: C

Severity Score

Related Resources (7)

https://source.android.com/security/bulletin/2022-10-01
https://www.debian.org/security/2022/dsa-5257
https://people.canonical.com/~ubuntu-security/cve/CVE-2022-20421
https://nvd.nist.gov/vuln/detail/CVE-2022-20421
https://security-tracker.debian.org/tracker/CVE-2022-20421
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
https://www.mend.io/vulnerability-database/CVE-2022-20421

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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