CVE-2021-20317

 

Published at: - 27-09-2021 01:15

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

Total changes: - 9

Description

A flaw was found in the Linux kernel. A corrupted timer tree caused the task wakeup to be missing in the timerqueue_add function in lib/timerqueue.c. This flaw allows a local attacker with special user privileges to cause a denial of service, slowing and eventually stopping the system while running OSP.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=511885d7061eda3eb1faf3f57dcc936ff75863f1
• https://bugzilla.redhat.com/show_bug.cgi?id=2005258
• [debian-lts-announce] 20211216 [SECURITY] [DLA 2843-1] linux security update-Mailing List, Third Party Advisory
• [debian-lts-announce] 20220309 [SECURITY] [DLA 2941-1] linux-4.19 security update-Mailing List, Third Party Advisory
• DSA-5096-Third Party Advisory
• https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf

 

Keywords

NVD

 

CVE-2021-20317

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures