CVE-2021-47560 Affecting kernel-rt-debug-debuginfo package, versions <0:4.18.0-553.22.1.rt7.363.el8_10


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-ROCKY8-KERNELRTDEBUGDEBUGINFO-8134057
  • published1 Oct 2024
  • disclosed24 May 2024

Introduced: 24 May 2024

CVE-2021-47560  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 kernel-rt-debug-debuginfo to version 0:4.18.0-553.22.1.rt7.363.el8_10 or higher.
This issue was patched in RLSA-2024:7001.

NVD Description

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

In the Linux kernel, the following vulnerability has been resolved:

mlxsw: spectrum: Protect driver from buggy firmware

When processing port up/down events generated by the device's firmware, the driver protects itself from events reported for non-existent local ports, but not the CPU port (local port 0), which exists, but lacks a netdev.

This can result in a NULL pointer dereference when calling netif_carrier_{on,off}().

Fix this by bailing early when processing an event reported for the CPU port. Problem was only observed when running on top of a buggy emulator.

CVSS Scores

version 3.1