Bug 2492198 (CVE-2026-42450) - CVE-2026-42450 OpenColorIO: stack-based buffer overflow via unbounded 'sscanf %s' in Spi3D (.spi3d) LUT parser
Summary: CVE-2026-42450 OpenColorIO: stack-based buffer overflow via unbounded 'sscanf...
Keywords:
Status: NEW
Alias: CVE-2026-42450
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
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URL:
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Depends On: 2492210 2492211
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-24 14:02 UTC by OSIDB Bzimport
Modified: 2026-06-24 14:31 UTC (History)
0 users

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Description OSIDB Bzimport 2026-06-24 14:02:29 UTC 
OpenColorIO is a color management framework for visual effects and animation. Prior to version 2.5.2, `FileFormatSpi3D.cpp:163` uses `sscanf` with `%s` into 64-byte stack buffers when parsing LUT data lines. Input comes from `lineBuffer[4096]`, so a crafted .spi3d file can overflow by ~4000 bytes on non-Windows. Version 2.5.2 fixes the issue.
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