OpenEXR CompositeDeepScanLine integer-overflow leads to heap OOB write (AcademySoftwareFoundation openexr)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.24 % · percentile 15 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Modified
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.
Weaknesses (CWE)
References
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-cr4v-6jm6-4963
- https://access.redhat.com/security/cve/CVE-2026-27622
- https://bugzilla.redhat.com/show_bug.cgi?id=2444251
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27622.json
- https://access.redhat.com/errata/RHSA-2026:7678
- https://access.redhat.com/errata/RHSA-2026:7682
- https://access.redhat.com/errata/RHSA-2026:8863
- https://access.redhat.com/errata/RHSA-2026:12340
- https://access.redhat.com/errata/RHSA-2026:12341
- https://access.redhat.com/errata/RHSA-2026:12339
- https://access.redhat.com/errata/RHSA-2026:12338
- https://access.redhat.com/errata/RHSA-2026:8870
- https://access.redhat.com/errata/RHSA-2026:8869
- https://access.redhat.com/errata/RHSA-2026:8871
- https://access.redhat.com/errata/RHSA-2026:8872
- https://access.redhat.com/errata/RHSA-2026:8888
- https://access.redhat.com/errata/RHSA-2026:16008
- https://access.redhat.com/errata/RHSA-2026:16030
- https://access.redhat.com/errata/RHSA-2026:16009
- https://access.redhat.com/errata/RHSA-2026:16174
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 4.0 | HIGH 8.4 | 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 |
| CVSS 3.1 | HIGH 7.4 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | redhat-SADP |
| CVSS 4.0 | HIGH 8.4 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.1 | HIGH 7.4 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
Advisories
- GHSA-cr4v-6jm6-4963 — OpenEXR's CompositeDeepScanLine integer-overflow leads to heap OOB write
- PYSEC-2026-2846 — OpenEXR's CompositeDeepScanLine integer-overflow leads to heap OOB write
European references
- ENISA EUVD · EUVD-2026-9342
- GCVE · GCVE-0-2026-27622
Affected configurations (NVD CPE)
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*< 3.2.6cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*≥ 3.3.0 < 3.3.8cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*≥ 3.4.0 < 3.4.6
Affected products
| Product | Versions |
|---|---|
| AcademySoftwareFoundation · openexr | affected >= 2.3.0, < 3.2.6 ; affected >= 3.3.0, < 3.3.8 ; affected >= 3.4.0, < 3.4.6 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |