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CVE-2026-27622

CVE-2026-27622 · OpenEXR CompositeDeepScanLine integer-overflow leads to heap OOB write

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 8.4 · High · EPSS 0.2% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • openexr

    Versions
    • >= 2.3.0, < 3.2.6: Affected
    • >= 3.3.0, < 3.3.8: Affected
    • >= 3.4.0, < 3.4.6: Affected

    No fix published

  • openexr Debian:12

    Versions
    • 3.1.13-1
    • 3.1.13-2
    • 3.1.5-5
    • 3.1.5-5.1
    • 3.1.5-5.1+hurd.1
    • 3.4.14-0.1
    • 3.4.15+ds-1
    • 3.4.6+ds-1
    • 3.4.6+ds-2
    • 3.4.6+ds-3
    • 3.4.6+ds-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openexr Debian:13

    Versions
    • 3.1.13-2
    • 3.4.14-0.1
    • 3.4.15+ds-1
    • 3.4.6+ds-1
    • 3.4.6+ds-2
    • 3.4.6+ds-3
    • 3.4.6+ds-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openexr Debian:14

    Versions
    • 3.1.13-2
    Affected ranges
    • ECOSYSTEM: < 3.4.6+ds-1

    Update to 3.4.6+ds-1

  • openexr PyPI

    Versions
    • 3.2.3
    • 3.2.4
    • 3.2.5
    Affected ranges
    • ECOSYSTEM: ≥ 2.3.0, < 3.2.6

    Update to 3.2.6

  • openexr PyPI

    Versions
    • 3.3.0
    • 3.3.1
    • 3.3.2
    • 3.3.3
    • 3.3.4
    • 3.3.5
    • 3.3.6
    • 3.3.7
    Affected ranges
    • ECOSYSTEM: ≥ 3.3.0, < 3.3.8

    Update to 3.3.8

  • openexr PyPI

    Versions
    • 3.4.0
    • 3.4.1
    • 3.4.2
    • 3.4.3
    • 3.4.4
    • 3.4.5
    Affected ranges
    • ECOSYSTEM: ≥ 3.4.0, < 3.4.6

    Update to 3.4.6

  • openexr PyPI

    Versions
    • 3.2.3
    • 3.2.4
    • 3.2.5
    • 3.3.0
    • 3.3.1
    • 3.3.2
    • 3.3.3
    • 3.3.4
    • 3.3.5
    • 3.3.6
    • 3.3.7
    • 3.4.0
    • 3.4.1
    • 3.4.2
    • 3.4.3
    • 3.4.4
    • 3.4.5
    Affected ranges
    • ECOSYSTEM: ≥ 2.3.0, < 3.2.6 ∪ ≥ 3.3.0, < 3.3.8 ∪ ≥ 3.4.0, < 3.4.6

    Update to 3.2.6; Update to 3.3.8; Update to 3.4.6

  • openexr Ubuntu:Pro:16.04:LTS

    Versions
    • 2.2.0-1ubuntu3
    • 2.2.0-7ubuntu1
    • 2.2.0-9ubuntu1
    • 2.2.0-10ubuntu2
    • 2.2.0-10ubuntu2.1
    • 2.2.0-10ubuntu2.2
    • 2.2.0-10ubuntu2.3
    • 2.2.0-10ubuntu2.4
    • 2.2.0-10ubuntu2.6
    • 2.2.0-10ubuntu2.6+esm1
    • 2.2.0-10ubuntu2.6+esm2
    • 2.2.0-10ubuntu2.6+esm3
    Affected ranges
    • ECOSYSTEM: < 2.2.0-10ubuntu2.6+esm4

    Update to 2.2.0-10ubuntu2.6+esm4

  • openexr Ubuntu:Pro:18.04:LTS

    Versions
    • 2.2.0-11ubuntu1
    • 2.2.0-11.1ubuntu1
    • 2.2.0-11.1ubuntu1.1
    • 2.2.0-11.1ubuntu1.2
    • 2.2.0-11.1ubuntu1.3
    • 2.2.0-11.1ubuntu1.4
    • 2.2.0-11.1ubuntu1.6
    • 2.2.0-11.1ubuntu1.7
    • 2.2.0-11.1ubuntu1.8
    • 2.2.0-11.1ubuntu1.9
    Affected ranges
    • ECOSYSTEM: < 2.2.0-11.1ubuntu1.9+esm1

    Update to 2.2.0-11.1ubuntu1.9+esm1

  • openexr Ubuntu:Pro:20.04:LTS

    Versions
    • 2.2.1-4.1ubuntu1
    • 2.3.0-6
    • 2.3.0-6build1
    • 2.3.0-6ubuntu0.1
    • 2.3.0-6ubuntu0.2
    • 2.3.0-6ubuntu0.3
    • 2.3.0-6ubuntu0.5
    • 2.3.0-6ubuntu0.5+esm1
    Affected ranges
    • ECOSYSTEM: < 2.3.0-6ubuntu0.5+esm2

    Update to 2.3.0-6ubuntu0.5+esm2

  • openexr Ubuntu:Pro:22.04:LTS

    Versions
    • 2.5.4-2
    • 2.5.7-1
    • 2.5.7-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: < 2.5.7-1ubuntu0.1~esm2

    Update to 2.5.7-1ubuntu0.1~esm2

  • openexr Ubuntu:Pro:24.04:LTS

    Versions
    • 3.1.5-5.1
    • 3.1.5-5.1build1
    • 3.1.5-5.1build2
    • 3.1.5-5.1build3
    Affected ranges
    • ECOSYSTEM: < 3.1.5-5.1ubuntu0.1~esm1

    Update to 3.1.5-5.1ubuntu0.1~esm1

  • openexr Ubuntu:25.10

    Versions
    • 3.1.13-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openexr Ubuntu:Pro:26.04:LTS

    Versions
    • 3.1.13-2
    • 3.1.13-2build1
    Affected ranges
    • ECOSYSTEM: < 3.1.13-2ubuntu0.26.04.1~esm1

    Update to 3.1.13-2ubuntu0.26.04.1~esm1

Original sources

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