Bug 2556299 (CVE-2026-113681)

Summary: CVE-2026-113681 OpenImageIO: OpenImageIO: Denial of Service via crafted Cineon image 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. An integer overflow in the Cineon image parser causes an undersized memory buffer allocation. By tricking a user or application into processing a specially crafted Cineon image file, an attacker can trigger an out-of-bounds memory read and crash the application, resulting in a Denial of Service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2558216, 2558217, 2558218    
Bug Blocks:    

Description OSIDB Bzimport 2026-10-20 15:59:56 UTC 
OpenImageIO before 3.0.20.0, 3.1.x before 3.1.15.0, and 3.2.x before 3.2.0.3-beta1 contains an integer overflow in cineon::Codec::Read that undersizes the scanline buffer, causing a heap out-of-bounds read. Attackers can supply a crafted Cineon file with a huge declared width that wraps the size calculation to zero, so UnPackPacked reads past a 4-byte buffer and crashes the application.