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.
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References
History
Mon, 06 Apr 2026 16:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | OpenEXR: DWA Lossy Decoder Heap Out-of-Bounds Write | |
| Weaknesses | CWE-190 CWE-787 |
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cvssV4_0
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-04-06T15:33:03.276Z
Reserved: 2026-03-30T17:15:52.498Z
Link: CVE-2026-34589
Vulnrichment
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NVD
Status : Received
Published: 2026-04-06T16:16:36.040
Modified: 2026-04-06T16:16:36.040
Link: CVE-2026-34589
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