Use After Free Affecting kernel-rt-devel package, versions <0:4.18.0-477.13.1.rt7.276.el8_8


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-CENTOS8-KERNELRTDEVEL-5506673
  • published9 May 2023
  • disclosed2 May 2023

Introduced: 2 May 2023

CVE-2023-32233  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Centos:8 kernel-rt-devel to version 0:4.18.0-477.13.1.rt7.276.el8_8 or higher.

NVD Description

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

In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.

CVSS Scores

version 3.1