VULNERABILITY INTELLIGENCE

CVE-2021-3679

CVSS score5.5 MEDIUM
EPSS probability0.75%
CISA KEVNot currently listed
Published2021-08-05
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • secalert@redhat.com: CWE-400
  • nvd@nist.gov: CWE-835

Primary references