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CVE-2026-65979

CVE-2026-65979 · OpenEXR: Out-of-bounds read in HTJ2K decoder from unvalidated chunk header length (PLEN)

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 3.4.12, the HTJ2K decoder parses a header-length field (PLEN) from a chunk's compressed data but never checks that this value fits within the available buffer before using it. When decoding, it advances the codestream pointer by the attacker-supplied header size and passes the resulting offset and remaining length to the OpenJPH memory-input path, so a crafted value pushes the pointer past the end of the buffer and causes an out-of-bounds read. Because this field comes straight from attacker-controlled EXR chunk data, the flaw is reachable during normal decoding of an untrusted file. This issue is fixed in version 3.4.13.

CVSS 6.7 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • openexr

    Versions
    • >= 3.4.0, < 3.4.13: Affected

    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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