Debian: DLA-2996-1 Critical: Mruby Denial Of Service Threats

CVE-2017-9527

heap-based use-after-free vulnerability allows attackers to cause
a denial of service or possibly have unspecified other impact via
a crafted .rb file

CVE-2018-10191

an integer overflow exists when handling OP_GETUPVAR in the
presence of deep scope nesting, resulting in a use-after-free. An
attacker that can cause Ruby code to be run can use this to
possibly execute arbitrary code

CVE-2018-11743

uninitialized pointer which allows attackers to cause a denial of
service or possibly have unspecified other impact.

CVE-2018-12249

There is a NULL pointer dereference in mrb_class_real because
"class BasicObject" is not properly supported in class.c.

CVE-2018-14337

a signed integer overflow, possibly leading to out-of-bounds
memory access because the mrb_str_resize function in string.c does
not check for a negative length

CVE-2020-15866

a heap-based buffer overflow in the mrb_yield_with_class function