Improper Update of Reference Count Affecting kernel6.12-headers package, versions <1:6.12.114-139.210.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.19% (9th percentile)

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  • Snyk IDSNYK-AMZN2023-KERNEL612HEADERS-22395596
  • published10 Nov 2026
  • disclosed15 Aug 2026

Introduced: 15 Aug 2026

CVE-2026-72439  (opens in a new tab)
CWE-911  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel6.12-headers to version 1:6.12.114-139.210.amzn2023 or higher.
This issue was patched in ALAS2023-2026-3402.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel6.12-headers package and not the kernel6.12-headers 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:

md/raid10: fix writes_pending leak on write request failures

raid10_make_request() acquires a writes_pending reference with md_write_start() before dispatching write requests. Several failure paths in raid10_write_request() complete the bio and return without reaching the normal write completion path, causing the corresponding md_write_end() to be skipped.

Make raid10_write_request() return a status indicating whether the write request was successfully queued. This allows raid10_make_request() to release the writes_pending reference with md_write_end() when a write request fails.

CVSS Base Scores

version 3.1