CVE-2025-40067 Affecting kernel6.12-debuginfo-common-aarch64 package, versions <1:6.12.53-69.119.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.03% (7th percentile)

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  • Snyk IDSNYK-AMZN2023-KERNEL612DEBUGINFOCOMMONAARCH64-14430786
  • published17 Dec 2025
  • disclosed28 Oct 2025

Introduced: 28 Oct 2025

CVE-2025-40067  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel6.12-debuginfo-common-aarch64 to version 1:6.12.53-69.119.amzn2023 or higher.
This issue was patched in ALAS2023-2025-1254.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel6.12-debuginfo-common-aarch64 package and not the kernel6.12-debuginfo-common-aarch64 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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

fs/ntfs3: reject index allocation if $BITMAP is empty but blocks exist

Index allocation requires at least one bit in the $BITMAP attribute to track usage of index entries. If the bitmap is empty while index blocks are already present, this reflects on-disk corruption.

syzbot triggered this condition using a malformed NTFS image. During a rename() operation involving a long filename (which spans multiple index entries), the empty bitmap allowed the name to be added without valid tracking. Subsequent deletion of the original entry failed with -ENOENT, due to unexpected index state.

Reject such cases by verifying that the bitmap is not empty when index blocks exist.

CVSS Base Scores

version 3.1