CVE-2025-12875

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 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 exploited. This patch is called 93619f06dd378db6766666b30c08978311c7ec94. It is best practice to apply a patch to resolve this issue.

The following products are affected by CVE-2025-12875 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-12875.

URL	Resource
https://github.com/makesoftwaresafe/mruby/commit/93619f06dd378db6766666b30c08978311c7ec94
https://github.com/mruby/mruby/issues/6650
https://github.com/mruby/mruby/issues/6650#event-20443453808
https://github.com/mruby/mruby/issues/6650#issuecomment-3430851605
https://vuldb.com/?ctiid.331511
https://vuldb.com/?id.331511
https://vuldb.com/?submit.680879