CVE-2026-55371

OpenEXR is the reference implementation and specification for the EXR high-dynamic-range image file format, widely used in the motion picture industry. Versions 3.4.0 through 3.4.12 contain a NULL pointer dereference in the OpenEXRCore function exr_attr_set_bytes(). The public setter validates the top-level exr_attr_bytes_t value pointer but does not verify that the nested type_hint pointer is non-NULL when hint_length is greater than zero. When a caller supplies a positive hint_length together with a NULL type_hint, exr_attr_bytes_create() allocates a destination type-hint buffer and then copies from the NULL source pointer, causing a deterministic crash. The flaw is reachable through the public OpenEXRCore C API and results in a denial of service. The issue is fixed in version 3.4.13.

CVSS

No CVSS.

References

Link	Resource
https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-xx72-f24p-cf6r

Configurations

No configuration.

History

12 Oct 2026, 15:10

Type	Values Removed	Values Added
Summary		(es) OpenEXR es la implementación de referencia y especificación para el formato de archivo de imagen de alto rango dinámico EXR, ampliamente utilizado en la industria cinematográfica. Las versiones 3.4.0 a 3.4.12 contienen una desreferencia de puntero NULL en la función OpenEXRCore exr_attr_set_bytes(). El setter público valida el puntero de valor de nivel superior exr_attr_bytes_t pero no verifica que el puntero anidado type_hint no sea NULL cuando hint_length es maandor que cero. Cuando un llamador suministra un hint_length positivo junto con un type_hint NULL, exr_attr_bytes_create() asigna un búfer de sugerencia de tipo de destino y luego copia desde el puntero de origen NULL, causando un fallo determinista. La falla es alcanzable a través de la API C pública de OpenEXRCore y resulta en una denegación de servicio. El problema está solucionado en la versión 3.4.13.

Information

Published : 2026-08-25 01:16

Updated : 2026-10-12 15:10

NVD link : CVE-2026-55371

Mitre link : CVE-2026-55371

CVE.ORG link : CVE-2026-55371

JSON object : View

Products Affected

No product.

CWE

CWE-20

Improper Input Validation

CWE-476

NULL Pointer Dereference

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