Vulnerability Database

314,453

Total vulnerabilities in the database

CVE-2021-3679

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.

  • Published: Aug 5, 2021
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-3679
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.5
  • AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v2:

  • Severity: Low
  • Score: 2.1
  • AV:L/AC:L/Au:N/C:N/I:N/A:P

CWEs:

Software From Fixed in
linux / linux_kernel 5.14-rc1 5.14-rc1.x
linux / linux_kernel 5.14-rc2 5.14-rc2.x
linux / linux_kernel 5.14 5.14.x
linux / linux_kernel - 5.14
redhat / enterprise_linux 8.0 8.0.x
debian / debian_linux 9.0 9.0.x
debian / debian_linux 10.0 10.0.x