PT-2021-22688 · Google · Android Kernel

Published 2021-12-15 · Updated 2022-07-12 · CVE-2021-39643

Positive Technologies (AI Summary)

CVSS v2.0

4.6

Medium

Base vector

AV:L/AC:L/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions: Android kernel

Description: The issue is related to a possible bypass of defense-in-depth due to missing validation of the return value in the ic startRetrieveEntryValue function of acropora/app/identity/ic.c. This could lead to local escalation of privilege, with System execution privileges needed. User interaction is not required for exploitation.

Recommendations: For Android kernel, consider applying validation to the return value of the ic startRetrieveEntryValue function to prevent potential bypass of defense-in-depth mechanisms. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Unchecked Return Value

Weakness Enumeration

CWE-252

Related Identifiers

CVE-2021-39643

Affected Products

Android Kernel

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2021-39643 · Security Note
• https://source.android.com/security/bulletin/pixel/2021-12-01 · Vendor Advisory