PT-2020-16634 · Google · Android Kernel

Published 2020-12-15 · Updated 2021-07-21 · CVE-2020-27066

Positive Technologies (AI Summary)

CVSS v3.1

6.7

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Android kernel

Description A possible use after free due to improper locking in the xfrm6 tunnel free spi function of net/ipv6/xfrm6 tunnel.c could lead to local escalation of privilege. System execution privileges are needed for exploitation, and user interaction is not required.

Recommendations For Android kernel, consider applying a patch to fix the improper locking issue in the xfrm6 tunnel free spi function as a permanent solution. As a temporary workaround, restrict access to the xfrm6 tunnel free spi function to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Locking

Use After Free

Weakness Enumeration

CWE-667

CWE-416

Related Identifiers

CVE-2020-27066

Affected Products

Android Kernel

References · 8

• https://security-tracker.debian.org/tracker/CVE-2020-27066 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-27066 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-27066 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-27066 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-27066 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-27066 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-27066 · Security Note
• https://source.android.com/security/bulletin/pixel/2020-12-01 · Vendor Advisory