DEBIAN-CVE-2021-20317

Advisory lineage Upstream: 1 Downstream: 3
Upstream
CVE-2021-20317
Published: 27 Sept 2021, 11:15
Last modified:28 Apr 2026, 20:22

Vulnerability Summary

Overall Risk (default)
low
18/100
CVSS Score
4.4 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

27 Sept 2021, 11:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:22
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Affected Systems

  • debian•linux

    < 5.4.6-1 | < 5.4.6-1 | < 5.4.6-1 | < 5.4.6-1

References (1)