Bug 2538049 (CVE-2026-50291)

Summary: CVE-2026-50291 OpenImageIO: OpenImageIO: Denial of Service via crafted BMP file
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in OpenImageIO, a toolset for image file manipulation. A remote attacker could exploit this vulnerability by providing a specially crafted BMP (Bitmap) image file. Processing this malicious file can lead to an invalid read operation during image decoding, causing the application to crash. This results in a denial of service (DoS), making the affected application unavailable.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2539157, 2539158, 2539159    
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Description OSIDB Bzimport 2026-09-22 16:56:44 UTC
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to versions 3.0.16.0 and 3.1.11.0, processing a crafted BMP file through oiiotool or an application linked to OpenImageIO can reach BMP palette handling in src/bmp.imageio/bmpinput.cpp with an empty color table. BmpInput::read_native_scanline then performs an invalid palette read while decoding an RLE-compressed scanline, causing a process crash and denial of service. This issue is fixed in versions 3.0.16.0 and 3.1.11.0.