Bug 2552244 (CVE-2026-110597)

Summary: CVE-2026-110597 tinyexr: tinyexr: Denial of Service via crafted multi-part EXR 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 tinyexr. When processing multi-part image files, the library fails to properly track buffer boundaries during header parsing, leading to an out-of-bounds read. An attacker could exploit this vulnerability by convincing a user or system to open a specially crafted EXR file, causing the application to crash, resulting in a Denial of Service (DoS), or potentially disclosing sensitive heap memory.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2554370, 2554372, 2554374, 2554377    
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Description OSIDB Bzimport 2026-10-14 14:32:03 UTC 
Tinyexr through 3.2.0 contains a heap out-of-bounds read vulnerability in ParseEXRMultipartHeaderFromMemory() that allows attackers to read beyond buffers due to a stale remaining-size value. Attackers can supply a crafted multi-part EXR file whose later part headers bypass ReadAttribute() bounds checks, crashing applications or leaking adjacent heap memory into attribute values.