Rapid7 Vulnerability & Exploit Database

Alma Linux: CVE-2021-4028: Important: kernel security and bug fix update (ALSA-2022-1550)

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

Alma Linux: CVE-2021-4028: Important: kernel security and bug fix update (ALSA-2022-1550)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
04/26/2022
Created
05/05/2022
Added
05/04/2022
Modified
04/24/2023

Description

A flaw in the Linux kernel's implementation of RDMA communications manager listener code allowed an attacker with local access to setup a socket to listen on a high port allowing for a list element to be used after free. Given the ability to execute code, a local attacker could leverage this use-after-free to crash the system or possibly escalate privileges on the system.

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

;