CVE-2021-3679 | BDVDB-2026-158141 Detail
kernel
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.
Impact#
No impact statement in the source data.
Weaknesses#
- CWE-400 Uncontrolled Resource Consumption
References#
- https://bugzilla.redhat.com/show_bug.cgi?id=1989165
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=67f0d6d9883c13174669f88adac4f0ee656cc16a
- https://www.debian.org/security/2021/dsa-4978
- https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.