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CVE-2025-12875

CVE-2025-12875 · mruby array.c ary_fill_exec out-of-bounds write

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

A weakness has been identified in mruby 3.4.0. This vulnerability affects the function ary_fill_exec of the file mrbgems/mruby-array-ext/src/array.c. Executing a manipulation of the argument start/length can lead to out-of-bounds write. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. This patch is called 93619f06dd378db6766666b30c08978311c7ec94. It is best practice to apply a patch to resolve this issue.

CVSS 4.8 · Medium · EPSS 0.2%

Published
Updated

Stack: system

Affected products and versions

  • mruby

    Versions
    • 3.4.0: Affected

    No fix published

  • mruby Ubuntu:16.04:LTS

    Versions
    • 1.1.0+20150817+gita1731254-1
    • 1.1.0+20150906+git1cbbb7e1-1
    • 1.2.0+20160315+git4f20d58a-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mruby Ubuntu:18.04:LTS

    Versions
    • 1.3.0-1
    • 1.3.0+20170925+git38185028-1
    • 1.3.0+20171029+git77edafb0-1
    • 1.4.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mruby Ubuntu:20.04:LTS

    Versions
    • 2.0.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mruby Ubuntu:22.04:LTS

    Versions
    • 2.1.2-3
    • 3.0.0-1
    • 3.0.0-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mruby Ubuntu:24.04:LTS

    Versions
    • 3.2.0-1
    • 3.2.0-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mruby Ubuntu:25.10

    Versions
    • 3.3.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mruby Ubuntu:26.10

    Versions
    • 3.4.0-2
    • 3.4.0-3
    • 4.0.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • mruby Ubuntu:26.04:LTS

    Versions
    • 3.3.0-1
    • 3.4.0-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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