| Name | CVE-2026-40250 |
| 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:1040` performs `chan->width * chan->bytes_per_element` in `int32` arithmetic without a `(size_t)` cast. This is the same overflow pattern fixed in other decoders by CVE-2026-34589/34588/34544, 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:1040`. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1134642 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| openexr (PTS) | bullseye (security), bullseye | 2.5.4-2+deb11u1 | vulnerable |
| bookworm | 3.1.5-5 | vulnerable | |
| trixie | 3.1.13-2 | vulnerable | |
| forky, sid | 3.4.6+ds-4 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| openexr | source | (unstable) | (unfixed) | 1134642 |
https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-m5qw-23x2-6phj
https://github.com/AcademySoftwareFoundation/openexr/pull/2346
Fixed by: https://github.com/AcademySoftwareFoundation/openexr/commit/416fecf71241c097d52da5b219d36afd94800e69 (main)
Fixed by: https://github.com/AcademySoftwareFoundation/openexr/commit/42d394a7b761325a3df7c2d57f9dfd905629ca4f (v3.4.10-rc)
Fixed by: https://github.com/AcademySoftwareFoundation/openexr/commit/a41f0d19841469148aabf7e1e056fab9f1c3c4f0 (v3.2.8-rc)