CVE-2024-36019 Affecting kernel-rt-modules package, versions <0:5.14.0-427.35.1.el9_4


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-ALMALINUX9-KERNELRTMODULES-8337255
  • published4 Nov 2024
  • disclosed11 Sept 2024

Introduced: 11 Sep 2024

CVE-2024-36019  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 kernel-rt-modules to version 0:5.14.0-427.35.1.el9_4 or higher.
This issue was patched in ALSA-2024:6567.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-modules package and not the kernel-rt-modules package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

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

regmap: maple: Fix cache corruption in regcache_maple_drop()

When keeping the upper end of a cache block entry, the entry[] array must be indexed by the offset from the base register of the block, i.e. max - mas.index.

The code was indexing entry[] by only the register address, leading to an out-of-bounds access that copied some part of the kernel memory over the cache contents.

This bug was not detected by the regmap KUnit test because it only tests with a block of registers starting at 0, so mas.index == 0.

CVSS Scores

version 3.1