Description
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, `internal_dwa_compressor.h:1722` performs `curc->width * curc->height` in `int32` arithmetic without a `(size_t)` cast. This is the same overflow pattern fixed in other locations by the recent CVE-2026-34589 batch, but this line was missed. Versions 3.4.10, 3.3.10, and 3.2.8 contain a fix that addresses `internal_dwa_compressor.h:1722`.
CVSS breakdown
CVSS 4.0
Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
Active
Confidentiality (Vulnerable System)
High
Integrity (Vulnerable System)
High
Availability (Vulnerable System)
High
Confidentiality (Subsequent System)
None
Integrity (Subsequent System)
None
Availability (Subsequent System)
None
Affected products
- AcademySoftwareFoundation / openexr>= 3.2.0, < 3.2.8 – >= 3.2.0, < 3.2.8
- AcademySoftwareFoundation / openexr>= 3.3.0, < 3.3.10 – >= 3.3.0, < 3.3.10
- AcademySoftwareFoundation / openexr>= 3.4.0, < 3.4.10 – >= 3.4.0, < 3.4.10
References
- VENDOR_ADVISORYhttps://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-j526-66f6-fxhx
- PATCHhttps://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.8
- PATCHhttps://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.10
- PATCHhttps://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.10