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Memory Leak The advisory has been revoked - it doesn't affect any version of package kernel-64k-debug-devel-matched  (opens in a new tab)

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0.23% (15th percentile)

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  • Snyk IDSNYK-RHEL9-KERNEL64KDEBUGDEVELMATCHED-9310756
  • published7 Mar 2025
  • disclosed17 Aug 2024
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Introduced: 17 Aug 2024

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

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-64k-debug-devel-matched package and not the kernel-64k-debug-devel-matched package as distributed by RHEL.

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.