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Use of Uninitialized Variable Affecting openexr package, versions *

Severity

 Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.01% (2nd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-OPENEXR-13883116
  • published12 Nov 2025
  • disclosed10 Nov 2025
Report a new vulnerability Found a mistake?

Introduced: 10 Nov 2025

NewCVE-2025-64181  (opens in a new tab)
CWE-457  (opens in a new tab)

How to fix?

There is no fixed version for Debian:unstable openexr.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openexr package and not the openexr package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.