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CVE-2026-111124

CVE-2026-111124 · CFITSIO through 4.7.0 Heap Out-of-Bounds Read via Negative ZDITHER0 Seed

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

CFITSIO through 4.7.0 contains a heap-based out-of-bounds read vulnerability in the imcompress.c unquantize helpers that allows attackers to read memory before the fits_rand_value table via a zero or negative ZDITHER0 seed. Attackers can supply a crafted FITS file with a SUBTRACTIVE_DITHER_1 compressed image, read through fits_open_file() and fits_read_pix(), to cause crashes or leak heap contents in decoded pixels.

CVSS 6.9 · Medium · EPSS 0.2%

Published
Updated

Stack: system

Affected products and versions

  • cfitsio

    Versions
    • ≥ 0, ≤ 4.7.0: Affected (semver)

    No fix published

  • cfitsio Debian:12

    Versions
    • 4.2.0-3
    • 4.3.0-1
    • 4.3.0-2
    • 4.3.1-1
    • 4.3.1-1.1
    • 4.3.1-1.1~exp1
    • 4.4.1-1
    • 4.4.1-2
    • 4.5.0-1
    • 4.5.0-2
    • 4.5.0-3
    • 4.5.0-4
    • 4.5.0-5
    • 4.6.2-1
    • 4.6.2-2
    • 4.6.3-1
    • 4.6.4-1
    • 4.7.0-1
    • 4.7.0-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cfitsio Debian:13

    Versions
    • 4.6.2-2
    • 4.6.3-1
    • 4.6.4-1
    • 4.7.0-1
    • 4.7.0-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cfitsio Debian:14

    Versions
    • 4.6.2-2
    • 4.6.3-1
    • 4.6.4-1
    • 4.7.0-1
    • 4.7.0-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cfitsio Ubuntu:16.04:LTS

    Versions
    • 3.370-5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cfitsio Ubuntu:18.04:LTS

    Versions
    • 3.410-1
    • 3.420-3
    • 3.430-1
    • 3.430-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cfitsio Ubuntu:20.04:LTS

    Versions
    • 3.470-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cfitsio Ubuntu:22.04:LTS

    Versions
    • 3.490-3
    • 4.0.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cfitsio Ubuntu:24.04:LTS

    Versions
    • 4.2.0-3
    • 4.3.0-2
    • 4.3.1-1
    • 4.3.1-1.1build1
    • 4.3.1-1.1build2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cfitsio Ubuntu:26.10

    Versions
    • 4.6.3-1
    • 4.6.4-1
    • 4.7.0-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cfitsio Ubuntu:26.04:LTS

    Versions
    • 4.6.2-2
    • 4.6.3-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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