Rapid7 Vulnerability & Exploit Database

Red Hat: CVE-2021-3679: CVE-2021-3679 kernel: DoS in rb_per_cpu_empty() (Multiple Advisories)

Free InsightVM Trial No Credit Card Necessary
Watch Demo See how it all works
Back to Search

Red Hat: CVE-2021-3679: CVE-2021-3679 kernel: DoS in rb_per_cpu_empty() (Multiple Advisories)

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:P)
Published
08/05/2021
Created
11/11/2021
Added
11/10/2021
Modified
03/13/2024

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(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;