Memory Leak Affecting kernel-debug-devel package, versions <0:5.14.0-427.42.1.el9_4


Severity

Recommended
0.0
medium
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-ROCKY9-KERNELDEBUGDEVEL-8363737
  • published9 Nov 2024
  • disclosed17 Aug 2024

Introduced: 17 Aug 2024

CVE-2024-43854  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:9 kernel-debug-devel to version 0:5.14.0-427.42.1.el9_4 or higher.
This issue was patched in RLSA-2024:8617.

NVD Description

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

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

block: initialize integrity buffer to zero before writing it to media

Metadata added by bio_integrity_prep is using plain kmalloc, which leads to random kernel memory being written media. For PI metadata this is limited to the app tag that isn't used by kernel generated metadata, but for non-PI metadata the entire buffer leaks kernel memory.

Fix this by adding the __GFP_ZERO flag to allocations for writes.

CVSS Scores

version 3.1