CVE-2022-20421

CVSS V2 None CVSS V3 High 7.8

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

Overview

CVE ID
CVE-2022-20421

Assigner
security@android.com

Vulnerability Status
Analyzed

Published Version
2022-10-11T20:15:12

Last Modified Date
2022-12-03T02:42:49

Weakness Enumerations

CWE	URL
CWE-416	http://cwe.mitre.org/data/definitions/416.html

CPE Configuration (Product)

CPE	Vulnerable	Operator
cpe:2.3:o:google:android:-:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:10.0:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:11.0:::::::*	1	OR

CVSS Version 3

Version
3.1

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

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
7.8

Base Severity
HIGH

Exploitability Score
1.8

Impact Score
5.9

References

Reference URL	Reference Tags
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html	Mailing List Third Party Advisory
https://source.android.com/security/bulletin/2022-10-01	Patch Vendor Advisory
https://www.debian.org/security/2022/dsa-5257	Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2022-20421
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-20421

History

Created	Old Value	New Value	Data Type	Notes
2022-10-11 21:00:59				Added to TrackCVE
2022-12-07 06:25:52	2022-10-11T20:15Z	2022-10-11T20:15:12	CVE Published Date	updated
2022-12-07 06:25:52		2022-12-03T02:42:49	CVE Modified Date	updated
2022-12-07 06:25:52		Analyzed	Vulnerability Status	updated
2022-12-07 06:26:04			References	updated