Description
An issue was discovered in mruby 1.4.1. There is a heap-based buffer over-read associated with OP_ENTER because mrbgems/mruby-fiber/src/fiber.c does not extend the stack in cases of many arguments to fiber.
References (2)
Core 2
Core References
Issue Tracking, Third Party Advisory x_refsource_misc
https://github.com/mruby/mruby/issues/4038
Patch, Third Party Advisory x_refsource_misc
https://github.com/mruby/mruby/commit/778500563a9f7ceba996937dc886bd8cde29b42b
Scores
CVSS v3
7.5
EPSS
0.0027
EPSS Percentile
50.8%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-125
Status
published
Products (1)
mruby/mruby
1.4.1
Published
Jun 12, 2018
Tracked Since
Feb 18, 2026