Allocation of Resources Without Limits or Throttling Affecting libjxl package, versions <0.11.2-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.29% (21st percentile)

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  • Snyk IDSNYK-ALPINE323-LIBJXL-17971438
  • published14 Jul 2026
  • disclosed11 Feb 2026

Introduced: 11 Feb 2026

CVE-2026-1837  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade Alpine:3.23 libjxl to version 0.11.2-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libjxl package and not the libjxl package as distributed by Alpine. See How to fix? for Alpine:3.23 relevant fixed versions and status.

A specially-crafted file can cause libjxl's decoder to write pixel data to uninitialized unallocated memory. Soon after that data from another uninitialized unallocated region is copied to pixel data.

This can be done by requesting color transformation of grayscale images to another grayscale color space. Buffers allocated for 1-float-per-pixel are used as if they are allocated for 3-float-per-pixel. That happens only if LCMS2 is used as CMS engine. There is another CMS engine available (selected by build flags).

CVSS Base Scores

version 3.1