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CVE-2026-68516

CVE-2026-68516 · OpenEXR: HTJ2K SIZ image-offset gap stack buffer overflow

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

OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. From version 3.4.0 through 3.4.13, a crafted HTJ2K-compressed EXR can crash OpenEXR during normal decode. An HTJ2K-compressed EXR whose JPEG 2000 SIZ fields place the first tile outside the visible image can reach invalid tile and codeblock geometry in the vendored OpenJPH AVX2 decoder, causing a stack out-of-bounds write and denial of service. OpenEXR's HTJ2K path validates the decoded codestream dimensions against the EXR chunk size, but it does not reject SIZ image-offset/tile-grid geometry where the first tile does not intersect the image. This issue is fixed in version 3.4.14.

CVSS 6.5 · Medium · EPSS 0.5% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • openexr

    Versions
    • >= 3.4.0, < 3.4.14: 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
    • 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: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
    • 2.2.0-10ubuntu2.6+esm4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • 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
    • 2.2.0-11.1ubuntu1.9+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • 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
    • 2.3.0-6ubuntu0.5+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openexr Ubuntu:Pro:22.04:LTS

    Versions
    • 2.5.4-2
    • 2.5.7-1
    • 2.5.7-1ubuntu0.1~esm1
    • 2.5.7-1ubuntu0.1~esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • 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
    • 3.1.5-5.1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openexr Ubuntu:26.10

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

    No fix published

  • openexr Ubuntu:Pro:26.04:LTS

    Versions
    • 3.1.13-2
    • 3.1.13-2build1
    • 3.1.13-2ubuntu0.26.04.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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