CVE-2018-12247

Name	CVE-2018-12247
Description	An issue was discovered in mruby 1.4.1. There is a NULL pointer dereference in mrb_class, related to certain .clone usage, because mrb_obj_clone in kernel.c copies flags other than the MRB_FLAG_IS_FROZEN flag (e.g., the embedded flag).
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
mruby (PTS)	bullseye	2.1.2-3	fixed
	bookworm	3.1.0-3	fixed
	sid, trixie	3.3.0-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
mruby	source	(unstable)	(not affected)

Notes

- mruby <not-affected> (Vulnerable code introduced later)
Introduced by: https://github.com/mruby/mruby/commit/f408143c289b8017883294f13d36d43b50c8bc5d
Fixed by: https://github.com/mruby/mruby/commit/55edae0226409de25e59922807cb09acb45731a2
https://github.com/mruby/mruby/issues/4036