CVE-2021-20317

MEDIUM

Linux Kernel < 5.4 - Denial of Service

Title source: rule
STIX 2.1

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.

Scores

CVSS v3 4.4
EPSS 0.0002
EPSS Percentile 3.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-665
Status published
Products (4)
debian/debian_linux 9.0
debian/debian_linux 10.0
linux/linux_kernel 5.4
linux/linux_kernel < 5.4
Published Sep 27, 2021
Tracked Since Feb 18, 2026