CVE-2021-20317
- Source
- https://cve.org/CVERecord?id=CVE-2021-20317
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-20317.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-20317
- Downstream
- Related
- Withdrawn
- 2026-01-27T04:17:31.653640Z
- Published
- 2021-09-27T11:15:07Z
- Modified
- 2026-01-27T04:17:31.653640Z
- Severity
-
- 4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
-
- https://bugzilla.redhat.com/show_bug.cgi?id=2005258
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=511885d7061eda3eb1faf3f57dcc936ff75863f1
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://www.debian.org/security/2022/dsa-5096
- https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf