CVE-2022-20421

HIGH7.8

In binder_inc_ref_for_node of binder

Published Oct 11, 2022

Modified 1 years ago

Details

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

References

WEBhttps://lists.debian.org/debian-lts-announce/2022/11/msg00001.html WEBhttps://source.android.com/security/bulletin/2022-10-01 ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2022-20421 ADVISORYhttps://www.debian.org/security/2022/dsa-5257

CVSS Analysis

CVSS v3.1

7.8

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

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

Ecosystems

Timeline

PublishedOct 11, 2022

ModifiedAug 3, 2024