| Name | CVE-2026-34589 |
| Description | OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.2.0 to before 3.2.7, 3.3.9, and 3.4.9, the DWA lossy decoder constructs temporary per-component block pointers using signed 32-bit arithmetic. For a large enough width, the calculation overflows and later decoder stores operate on a wrapped pointer outside the allocated rowBlock backing store. This vulnerability is fixed in 3.2.7, 3.3.9, and 3.4.9. |
| 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) |
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) |
https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-p8xc-w3q4-h64x
https://github.com/AcademySoftwareFoundation/openexr/pull/2328
https://github.com/AcademySoftwareFoundation/openexr/commit/e464a33cc5bcd9f7dad2364bf76c08a52a5b0fbf (main)
https://github.com/AcademySoftwareFoundation/openexr/commit/ea588c8f075f5915e34931861e15b6c2d3b62561 (v3.4.9-rc)
https://github.com/AcademySoftwareFoundation/openexr/commit/ca0139287918775e1fddc0ed0033d694bec033ff (v3.2.7-rc)