PT-2021-22682 · Google · Android Kernel

Published 2021-12-15 · Updated 2021-12-20 · CVE-2021-39638

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 versions (affected versions not specified)

Description: The issue is related to a possible out of bounds write due to a use after free in the periodic io work func of lwis periodic io.c. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2021-39638

Affected Products

Android Kernel

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2021-39638 · Security Note
• https://source.android.com/security/bulletin/pixel/2021-12-01 · Vendor Advisory
• https://t.me/cibsecurity/34062 · Telegram Post