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CVE-2026-42146

CVE-2026-42146 · CImg Library: Uncontrolled memory allocation via nb_colors field in _load_bmp

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

CImg Library is a C++ library for image processing. Prior to commit c3aacf5, the nb_colors field read from the BMP file header is used directly to compute an allocation size without validating it against the remaining file size. A crafted BMP file with a large nb_colors value triggers an out-of-memory condition, crashing any application that uses CImg to load untrusted BMP files. This issue has been patched via commit c3aacf5.

CVSS 5.5 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • cimg

    Versions
    • < c3aacf5b96ac1e54b7af1957c6737dbf3949f6d3: Affected

    No fix published

  • cimg Debian:12

    Versions
    • 3.2.1+dfsg-1
    • 3.2.1+dfsg-2
    • 3.5.0+dfsg-1
    • 3.5.2+dfsg-1
    • 3.5.2+dfsg-2
    • 4.0.4+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cimg Debian:13

    Versions
    • 3.5.2+dfsg-1
    Affected ranges
    • ECOSYSTEM: < 3.5.2+dfsg-1+deb13u1

    Update to 3.5.2+dfsg-1+deb13u1

  • cimg Debian:14

    Versions
    • 3.5.2+dfsg-1
    Affected ranges
    • ECOSYSTEM: < 3.5.2+dfsg-2

    Update to 3.5.2+dfsg-2

  • cimg Ubuntu:16.04:LTS

    Versions
    • 1.6.4+dfsg-1build1
    • 1.6.5+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cimg Ubuntu:Pro:18.04:LTS

    Versions
    • 1.7.9+dfsg-2
    • 1.7.9+dfsg-2build1
    • 1.7.9+dfsg-2ubuntu0.18.04.1
    • 1.7.9+dfsg-2ubuntu0.18.04.2
    • 1.7.9+dfsg-2ubuntu0.18.04.2+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cimg Ubuntu:20.04:LTS

    Versions
    • 2.4.5+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cimg Ubuntu:Pro:22.04:LTS

    Versions
    • 2.9.4+dfsg-2
    • 2.9.4+dfsg-3
    • 2.9.4+dfsg-3ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cimg Ubuntu:Pro:24.04:LTS

    Versions
    • 3.2.1+dfsg-1
    • 3.2.1+dfsg-1ubuntu0.24.04.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cimg Ubuntu:25.10

    Versions
    • 3.5.2+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cimg Ubuntu:26.10

    Versions
    • 3.5.2+dfsg-1build1
    • 3.5.2+dfsg-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cimg Ubuntu:26.04:LTS

    Versions
    • 3.5.2+dfsg-1
    • 3.5.2+dfsg-1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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