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CVE-2026-40244

CVE-2026-40244 · OpenEXR has integer overflow in DWA setupChannelData planarUncRle pointer arithmetic (missed variant of CVE-2026-34589)

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 versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, `internal_dwa_compressor.h:1722` performs `curc->width * curc->height` in `int32` arithmetic without a `(size_t)` cast. This is the same overflow pattern fixed in other locations by the recent CVE-2026-34589 batch, but this line was missed. Versions 3.4.10, 3.3.10, and 3.2.8 contain a fix that addresses `internal_dwa_compressor.h:1722`.

CVSS 8.4 · High · EPSS 0.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • openexr

    Versions
    • >= 3.2.0, < 3.2.8: Affected
    • >= 3.3.0, < 3.3.10: Affected
    • >= 3.4.0, < 3.4.10: 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
    • 3.4.16+ds-1
    • 3.4.6+ds-1
    • 3.4.6+ds-2
    • 3.4.6+ds-3
    • 3.4.6+ds-4
    • 3.5.2+ds-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openexr Debian:13

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

    No fix published

  • openexr Debian:14

    Versions
    • 3.1.13-2
    • 3.4.6+ds-1
    • 3.4.6+ds-2
    • 3.4.6+ds-3
    • 3.4.6+ds-4
    Affected ranges
    • ECOSYSTEM: < 3.4.14-0.1

    Update to 3.4.14-0.1

  • openexr Ubuntu:26.10

    Versions
    • 3.1.13-2build1
    • 3.4.6+ds-4ubuntu3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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