Deadlock Affecting kernel-rt-core package, versions <0:4.18.0-425.19.2.rt7.230.el8_7


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-ALMALINUX8-KERNELRTCORE-5634392
  • published28 May 2023
  • disclosed27 Mar 2023

Introduced: 27 Mar 2023

CVE-2022-4269  (opens in a new tab)
CWE-833  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 kernel-rt-core to version 0:4.18.0-425.19.2.rt7.230.el8_7 or higher.
This issue was patched in ALSA-2023:1584.

NVD Description

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

A flaw was found in the Linux kernel Traffic Control (TC) subsystem. Using a specific networking configuration (redirecting egress packets to ingress using TC action "mirred") a local unprivileged user could trigger a CPU soft lockup (ABBA deadlock) when the transport protocol in use (TCP or SCTP) does a retransmission, resulting in a denial of service condition.

CVSS Scores

version 3.1