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`.
Metrics
CVSS 3.1 7.1/10
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| AcademySoftwareFoundation | openexr | >= 3.2.0, < 3.2.8; >= 3.3.0, < 3.3.10; >= 3.4.0, < 3.4.10 |
| Red Hat | Red Hat Enterprise Linux 10 | — |
| Red Hat | Red Hat Enterprise Linux 6 | — |
| Red Hat | Red Hat Enterprise Linux 7 | — |
| Red Hat | Red Hat Enterprise Linux 8 | — |
| Red Hat | Red Hat Enterprise Linux 9 | — |
References
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.8Product, Release Notes
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.10Product, Release Notes
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.10Product, Release Notes
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-j526-66f6-fxhxMitigation, Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-40244
- https://bugzilla.redhat.com/show_bug.cgi?id=2459955
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40244.json
Timeline
- Published
- Apr 21, 2026
- Last modified
- Oct 26, 2026
- NVD status
- Modified