Bug 2477572 (CVE-2026-43903)

Summary: CVE-2026-43903 OpenImageIO: OpenImageIO: Denial of Service via crafted SGI image file
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in OpenImageIO. A remote attacker could exploit this vulnerability by providing a specially crafted .sgi image file. This file, with a Run-Length Encoding (RLE) count exceeding the scanline width, can cause a heap buffer overflow. Successful exploitation leads to a denial of service, causing the application to crash.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2477871, 2477872, 2477876    
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Description OSIDB Bzimport 2026-05-14 20:01:36 UTC
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, sgiinput.cpp:265,274 use OIIO_DASSERT for bounds checking in the RLE decode loop. In release builds, OIIO_DASSERT compiles to ((void)sizeof(x)) (dassert.h:210), making all bounds checks no-ops. A crafted .sgi file with RLE count exceeding scanline width causes heap buffer overflow and crash. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.