OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In CompositeDeepScanLine::readPixels, per-pixel totals are accumulated in vector<unsigned int> total_sizes for attacker-controlled large counts across many parts, total_sizes[ptr] wraps modulo 2^32. overall_sample_count is then derived from wrapped totals and used in samples[channel].resize(overall_sample_count). Decode pointer setup/consumption proceeds with true sample counts, and write operations in core unpack (generic_unpack_deep_pointers) overrun the undersized composite sample buffer. This vulnerability is fixed in v3.2.6, v3.3.8, and v3.4.6.
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History
Thu, 05 Mar 2026 00:15:00 +0000
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| Weaknesses | CWE-190 | |
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threat_severity
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cvssV3_1
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Wed, 04 Mar 2026 16:15:00 +0000
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ssvc
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Wed, 04 Mar 2026 15:00:00 +0000
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Academysoftwarefoundation
Academysoftwarefoundation openexr |
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Academysoftwarefoundation
Academysoftwarefoundation openexr |
Tue, 03 Mar 2026 22:45:00 +0000
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| Description | OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In CompositeDeepScanLine::readPixels, per-pixel totals are accumulated in vector<unsigned int> total_sizes for attacker-controlled large counts across many parts, total_sizes[ptr] wraps modulo 2^32. overall_sample_count is then derived from wrapped totals and used in samples[channel].resize(overall_sample_count). Decode pointer setup/consumption proceeds with true sample counts, and write operations in core unpack (generic_unpack_deep_pointers) overrun the undersized composite sample buffer. This vulnerability is fixed in v3.2.6, v3.3.8, and v3.4.6. | |
| Title | OpenEXR CompositeDeepScanLine integer-overflow leads to heap OOB write | |
| Weaknesses | CWE-787 | |
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cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-03-03T22:42:49.086Z
Updated: 2026-03-04T16:08:34.400Z
Reserved: 2026-02-20T22:02:30.027Z
Link: CVE-2026-27622
Updated: 2026-03-04T16:08:09.596Z
Status : Awaiting Analysis
Published: 2026-03-03T23:15:55.737
Modified: 2026-03-04T18:08:05.730
Link: CVE-2026-27622