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CVE-2026-22801

CVE-2026-22801 · LIBPNG has an integer truncation causing heap buffer over-read in png_image_write_*

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

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.6.26 to 1.6.53, there is an integer truncation in the libpng simplified write API functions png_write_image_16bit and png_write_image_8bit causes heap buffer over-read when the caller provides a negative row stride (for bottom-up image layouts) or a stride exceeding 65535 bytes. The bug was introduced in libpng 1.6.26 (October 2016) by casts added to silence compiler warnings on 16-bit systems. This vulnerability is fixed in 1.6.54.

CVSS 6.8 · Medium · EPSS 0.1% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • libpng

    Versions
    • < 1.6.54: Affected

    No fix published

  • libpng1.6 Debian:12

    Versions
    • 1.6.39-2
    • 1.6.39-2+deb12u1
    Affected ranges
    • ECOSYSTEM: < 1.6.39-2+deb12u2

    Update to 1.6.39-2+deb12u2

  • libpng1.6 Debian:13

    Versions
    • 1.6.48-1
    • 1.6.48-1+deb13u1
    Affected ranges
    • ECOSYSTEM: < 1.6.48-1+deb13u2

    Update to 1.6.48-1+deb13u2

  • libpng1.6 Debian:14

    Versions
    • 1.6.48-1
    • 1.6.49-1~exp1
    • 1.6.50-1
    • 1.6.50-1~exp1
    • 1.6.51-1
    • 1.6.52-1
    • 1.6.53-1
    Affected ranges
    • ECOSYSTEM: < 1.6.54-1

    Update to 1.6.54-1

  • libpng1.6 Ubuntu:Pro:18.04:LTS

    Versions
    • 1.6.34-1
    • 1.6.34-1ubuntu0.18.04.1
    • 1.6.34-1ubuntu0.18.04.2
    • 1.6.34-1ubuntu0.18.04.2+esm1
    Affected ranges
    • ECOSYSTEM: < 1.6.34-1ubuntu0.18.04.2+esm2

    Update to 1.6.34-1ubuntu0.18.04.2+esm2

  • libpng1.6 Ubuntu:Pro:20.04:LTS

    Versions
    • 1.6.37-1
    • 1.6.37-2
    • 1.6.37-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: < 1.6.37-2ubuntu0.1~esm2

    Update to 1.6.37-2ubuntu0.1~esm2

  • libpng1.6 Ubuntu:22.04:LTS

    Versions
    • 1.6.37-3build4
    • 1.6.37-3build5
    • 1.6.37-3ubuntu0.1
    Affected ranges
    • ECOSYSTEM: < 1.6.37-3ubuntu0.3

    Update to 1.6.37-3ubuntu0.3

  • libpng1.6 Ubuntu:24.04:LTS

    Versions
    • 1.6.40-1
    • 1.6.40-2
    • 1.6.40-3
    • 1.6.42-1
    • 1.6.43-1
    • 1.6.43-3
    • 1.6.43-5build1
    • 1.6.43-5ubuntu0.1
    Affected ranges
    • ECOSYSTEM: < 1.6.43-5ubuntu0.3

    Update to 1.6.43-5ubuntu0.3

  • libpng1.6 Ubuntu:25.10

    Versions
    • 1.6.47-1.1
    • 1.6.48-1
    • 1.6.49-1~exp1
    • 1.6.50-1~exp1
    • 1.6.50-1
    • 1.6.50-1ubuntu0.1
    Affected ranges
    • ECOSYSTEM: < 1.6.50-1ubuntu0.3

    Update to 1.6.50-1ubuntu0.3

  • libpng1.6 Ubuntu:26.04:LTS

    Versions
    • 1.6.50-1
    • 1.6.51-1
    • 1.6.53-1
    Affected ranges
    • ECOSYSTEM: < 1.6.54-1

    Update to 1.6.54-1

Original sources

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