Use After Free Affecting kernel-rt-debug-kvm package, versions <0:4.18.0-477.27.1.rt7.290.el8_8


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELRTDEBUGKVM-5910604
  • published30 Jul 2023
  • disclosed19 Jul 2023

Introduced: 19 Jul 2023

CVE-2023-4004  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-rt-debug-kvm to version 0:4.18.0-477.27.1.rt7.290.el8_8 or higher.
This issue was patched in RHSA-2023:5255.

NVD Description

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

A use-after-free flaw was found in the Linux kernel's netfilter in the way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. This issue could allow a local user to crash the system or potentially escalate their privileges on the system.

CVSS Scores

version 3.1