vulnerability

Alma Linux: CVE-2021-3679: Moderate: kernel security, bug fix, and enhancement update (ALSA-2021-4356)

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:P)
Published
Aug 5, 2021
Added
May 4, 2022
Modified
Mar 31, 2026

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.

Solution

alma-upgrade-kernel-tools-libs-devel
Title
Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.