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Mon, 22 Jun 2026 18:30:00 +0000
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ssvc
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Sat, 20 Jun 2026 00:15:00 +0000
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threat_severity
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threat_severity
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Thu, 18 Jun 2026 22:15:00 +0000
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Academysoftwarefoundation
Academysoftwarefoundation openexr |
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Academysoftwarefoundation
Academysoftwarefoundation openexr |
Thu, 18 Jun 2026 20:30:00 +0000
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| Description | OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. In versions 3.4.0 through 3.4.11, an integer overflow in ht_undo_impl() in src/lib/OpenEXRCore/internal_ht.cpp leads to a heap-buffer overflow when decoding a crafted HTJ2K-compressed EXR file. decode->channels[i].width (int32_t) is multiplied by bytes_per_element in 32-bit signed arithmetic. With large widths (e.g., >= 536870912 for FLOAT data), this overflows, producing a corrupted offset that is later used for pointer arithmetic and can cause a heap out-of-bounds write. The same unchecked multiplication pattern appears in two other HTJ2K paths (bytes-per-line accumulation and pixel-line pointer advancement). As with related CVE-2026-34378 through CVE-2026-34589 fixes in other codecs, validating only after the multiplication is too late because the value may already be overflowed. This issue has been fixed in version 3.4.12. | |
| Title | OpenEXR: Integer overflow in the HTJ2K decoder leads to heap-buffer-overflow | |
| Weaknesses | CWE-190 CWE-787 |
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cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-22T15:47:32.968Z
Reserved: 2026-05-07T16:20:08.659Z
Link: CVE-2026-44663
Updated: 2026-06-22T15:42:25.742Z
No data.
OpenCVE Enrichment
Updated: 2026-06-18T22:15:04Z