Use After Free Affecting kernel-rt-debuginfo-common-x86_64 package, versions <0:4.18.0-348.23.1.rt7.153.el8_5


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-ROCKY8-KERNELRTDEBUGINFOCOMMONX8664-3276662
  • published3 Feb 2023
  • disclosed24 Aug 2022

Introduced: 24 Aug 2022

CVE-2021-4028  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 kernel-rt-debuginfo-common-x86_64 to version 0:4.18.0-348.23.1.rt7.153.el8_5 or higher.
This issue was patched in RLSA-2022:1555.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debuginfo-common-x86_64 package and not the kernel-rt-debuginfo-common-x86_64 package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

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.

CVSS Scores

version 3.1