AIKIDO-2026-411897
AcademySoftwareFoundation.openexr is vulnerable to Use of Uninitialized Memory
33
Low Risk
This Affects:
AcademySoftwareFoundation.openexrTL;DR
OpenEXRCore accepts a compressed deep-scanline chunk whose sample-count table declares a length of zero. Because no packed sample-count table is allocated for a zero-length declaration, the decompression step and its validation are skipped, leaving the sample-count table buffer uninitialized. The sample-table unpack routine then reads those uninitialized entries to validate monotonicity and total sample counts, producing undefined behavior and a plausible crash. The fix initializes or rejects the absent compressed sample-count table before it is read.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you decode or validate untrusted compressed deep-scanline EXR files.
Background info
AcademySoftwareFoundation.openexr is vulnerable to Use of Uninitialized Memory in versions 3.1.0 - 3.4.13.
How to fix this
Upgrade the AcademySoftwareFoundation.openexr library to the patch version.
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SOC 2Compliant
ISO 27001Compliant