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CVE-2026-1837
Linux Debian vulnerability analysis and mitigation

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).


SourceNVD

Related Linux Debian vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-33986HIGH7.5
  • WolfiWolfi
  • freerdp2
NoYesMar 30, 2026
CVE-2026-33987HIGH7.1
  • WolfiWolfi
  • freerdp2
NoYesMar 30, 2026
CVE-2026-33995MEDIUM5.3
  • WolfiWolfi
  • libwinpr
NoYesMar 30, 2026
CVE-2026-34881MEDIUM5
  • Linux DebianLinux Debian
  • glance
NoYesMar 31, 2026
CVE-2026-33691N/AN/A
  • Linux DebianLinux Debian
  • modsecurity-crs
NoNoMar 31, 2026

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