CVE-2026-40244
OpenEXR has integer overflow in DWA setupChannelData planarUncRle pointer arithmetic (missed variant of CVE-2026-34589)
- State
- Published
- Severity
- 8.4 High
- Published
- Apr 21, 2026
- Updated
- Jul 15, 2026
- Reserved
- Apr 10, 2026
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`.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.4 High | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | GitHub_M |
| 3.1 | 8.2 High | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H | redhat-SADP |
Weaknesses
- CWE-190 Integer Overflow or Wraparound
Affected Products
| Product | Versions |
|---|---|
openexrAcademySoftwareFoundation |
|
References
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-j526-66f6-fxhx
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.8
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.10
- https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.10
- https://access.redhat.com/security/cve/CVE-2026-40244vdb-entry
- RHBZ#2459955issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40244.json
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.