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CVE-2023-20928

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Date: January 26, 2023

In binder_vma_close of binder.c, there is a possible use after free due to improper locking. 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-254837884References: Upstream kernel

Language: C

Severity Score

Related Resources (7)

https://android.googlesource.com/kernel/common/+/201d5f4a3ec1
http://packetstormsecurity.com/files/170855/Android-Binder-VMA-Management-Security-Issues.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2023-20928
https://nvd.nist.gov/vuln/detail/CVE-2023-20928
https://security-tracker.debian.org/tracker/CVE-2023-20928
https://source.android.com/security/bulletin/2023-01-01
https://www.mend.io/vulnerability-database/CVE-2023-20928

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

Improper Locking

CWE-667

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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