PT-2022-10966 · Google · Android Kernel

Published 2022-01-14 · Updated 2022-01-20 · CVE-2021-39681

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 arbitrary code execution due to a use after free in the delete protocol function of main.c. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Recommendations For Android kernel, consider disabling the delete protocol function as a temporary workaround until a patch is available. Restrict access to the affected main.c file to minimize the risk of exploitation. 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-2021-39681

Affected Products

Android Kernel

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2021-39681 · Security Note
• https://source.android.com/security/bulletin/pixel/2022-01-01 · Vendor Advisory
• https://t.me/cvenotify/25677 · Telegram Post
• https://t.me/cibsecurity/35596 · Telegram Post