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).
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mruby | Mruby | 1.4.1 (including) | 1.4.1 (including) |
| Mruby | Ubuntu | artful | * |
| Mruby | Ubuntu | bionic | * |
| Mruby | Ubuntu | cosmic | * |
| Mruby | Ubuntu | disco | * |
| Mruby | Ubuntu | eoan | * |
| Mruby | Ubuntu | focal | * |
| Mruby | Ubuntu | groovy | * |
| Mruby | Ubuntu | hirsute | * |
| Mruby | Ubuntu | impish | * |
| Mruby | Ubuntu | kinetic | * |
| Mruby | Ubuntu | lunar | * |
| Mruby | Ubuntu | mantic | * |
| Mruby | Ubuntu | oracular | * |
| Mruby | Ubuntu | plucky | * |
| Mruby | Ubuntu | trusty | * |
| Mruby | Ubuntu | xenial | * |