Bug 2523716 (CVE-2026-59983)

Summary:	CVE-2026-59983 OpenEXR: OpenEXR: Denial of Service via crafted deep-tile EXR files
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in OpenEXR. A remote attacker could exploit an out-of-bounds read vulnerability by providing a specially crafted uncompressed deep-tile EXR image file. This crafted file causes an error in the sample-count table size calculation, leading to a wrap-around before processing the full image dimensions. This can result in a denial of service (DoS), making the application unavailable.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2537151, 2537152, 2537153
Bug Blocks:

Description OSIDB Bzimport 2026-08-25 18:21:55 UTC

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. OpenEXR versions before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 are vulnerable on ILP32 builds to an out-of-bounds read. The vulnerability is reached when a crafted uncompressed deep-tile EXR causes the sample-count table size calculation in OpenEXRCore decoding.c to wrap before unpack_sample_table() iterates over the full attacker-controlled tile dimensions, allowing denial of service. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.