OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.3.0 through 3.3.5 and 3.4.0 through 3.4.2, while fuzzing `openexr_exrcheck_fuzzer`, Valgrind reports a conditional branch depending on uninitialized data inside `generic_unpack`. This indicates a use of uninitialized memory. The issue can result in undefined behavior and/or a potential crash/denial of service. Versions 3.3.6 and 3.4.3 fix the issue.
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History

Mon, 10 Nov 2025 21:30:00 +0000

Type Values Removed Values Added
Description OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.3.0 through 3.3.5 and 3.4.0 through 3.4.2, while fuzzing `openexr_exrcheck_fuzzer`, Valgrind reports a conditional branch depending on uninitialized data inside `generic_unpack`. This indicates a use of uninitialized memory. The issue can result in undefined behavior and/or a potential crash/denial of service. Versions 3.3.6 and 3.4.3 fix the issue.
Title OpenEXR Makes Use of Uninitialized Memory
Weaknesses CWE-457
References
Metrics cvssV4_0

{'score': 2, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-11-10T21:23:04.248Z

Reserved: 2025-10-28T21:07:16.440Z

Link: CVE-2025-64181

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-11-10T22:15:36.933

Modified: 2025-11-10T22:15:36.933

Link: CVE-2025-64181

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.