PT-2022-1357 · Google · Android Kernel

Published 2022-01-01 · Updated 2022-01-20 · CVE-2021-39634

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Android kernel

Description In fs/eventpoll.c, there is a possible use after free. This could lead to local escalation of privilege with no additional 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

ASB-A-204450605

CVE-2021-39634

Affected Products

Android Kernel

References · 12

• https://source.android.com/security/bulletin/2022-01-01 · Vendor Advisory
• https://osv.dev/vulnerability/ASB-A-204450605 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-39634 · Security Note
• https://ubuntu.com/security/CVE-2021-39634 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-39634 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-39634 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-39634 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-39634 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-39634 · Vendor Advisory
• https://git.kernel.org/linus/f8d4f44df056c5b504b0d49683fb7279218fd207 · Note
• https://android.googlesource.com/kernel/common/+/f8d4f44df056c5b504b0d49683fb7279218fd207 · Note
• https://t.me/cibsecurity/35593 · Telegram Post