CVE-2021-3679

 

Published at: - 05-08-2021 10:15

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

Total changes: - 9

Description

A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=67f0d6d9883c13174669f88adac4f0ee656cc16a
• https://bugzilla.redhat.com/show_bug.cgi?id=1989165
• DSA-4978-Third Party Advisory
• [debian-lts-announce] 20211015 [SECURITY] [DLA 2785-1] linux-4.19 security update-Third Party Advisory
• [debian-lts-announce] 20211216 [SECURITY] [DLA 2843-1] linux security update-Mailing List, Third Party Advisory

 

Keywords

NVD

 

CVE-2021-3679

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures