Rapid7 Vulnerability & Exploit Database

Alma Linux: CVE-2021-28971: Moderate: kernel security, bug fix, and enhancement update (ALSA-2021-4356)

Back to Search

Alma Linux: CVE-2021-28971: Moderate: kernel security, bug fix, and enhancement update (ALSA-2021-4356)

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
03/22/2021
Created
05/05/2022
Added
05/04/2022
Modified
05/13/2022

Description

In intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c in the Linux kernel through 5.11.8 on some Haswell CPUs, userspace applications (such as perf-fuzzer) can cause a system crash because the PEBS status in a PEBS record is mishandled, aka CID-d88d05a9e0b6.

Solution(s)

  • alma-upgrade-kernel-tools-libs-devel

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

;