CVE-2026-34589
Publication date 6 April 2026
Last updated 8 April 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| openexr | 25.10 questing |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-34589
- 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)
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.7
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.9
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.9