CVE-2021-4083

 

Published at: - 18-01-2022 06:15

Last modified: - 26-10-2022 01:44

Total changes: - 8

Description

A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on the system. This flaw affects Linux kernel versions prior to 5.16-rc4.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=054aa8d439b9
• https://bugzilla.redhat.com/show_bug.cgi?id=2029923
• https://security.netapp.com/advisory/ntap-20220217-0005/
• [debian-lts-announce] 20220309 [SECURITY] [DLA 2941-1] linux-4.19 security update-Mailing List, Third Party Advisory
• [debian-lts-announce] 20220309 [SECURITY] [DLA 2940-1] linux security update-Mailing List, Third Party Advisory
• DSA-5096-Third Party Advisory
• N/A-

 

Keywords

NVD

 

CVE-2021-4083

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures