Use After Free Affecting kernel-rt-debug-kvm package, versions <0:4.18.0-305.131.1.rt7.207.el8_4


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
0.29% (70th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELRTDEBUGKVM-7174828
  • published1 Jun 2024
  • disclosed31 Jan 2024

Introduced: 31 Jan 2024

CVE-2024-1086  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-rt-debug-kvm to version 0:4.18.0-305.131.1.rt7.207.el8_4 or higher.
This issue was patched in RHSA-2024:3530.

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 vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.

The nft_verdict_init() function allows positive values as drop error within the hook verdict, and hence the nf_hook_slow() function can cause a double free vulnerability when NF_DROP is issued with a drop error which resembles NF_ACCEPT.

We recommend upgrading past commit f342de4e2f33e0e39165d8639387aa6c19dff660.

CVSS Scores

version 3.1