mrubyc through 3.4.1 was found to contain a NULL pointer dereference in src/vm.c in opsuper() / OPSUPER due to a missing runtime guard for top-level super.

A flaw has been found in mruby up to 3.4.0. This affects the function mrbvmexec of the file src/vm.c of the component JMPNOT-to-JMPIF Optimization. Executing a manipulation can lead to use after free. The attack needs to be launched locally. The exploit has been published and may be used. This patch is called e50f15c1c6e131fa7934355eb02b8173b13df415. It is advisable to implement a patch to correct this issue.

An Untrusted Pointer Dereference was discovered in function mrbvmexec in mruby before 3.1.0-rc. The vulnerability causes a segmentation fault and application crash.

Out-of-bounds Read in mrbobjiskindof in in GitHub repository mruby/mruby prior to 3.2. # Impact: Possible arbitrary code execution if being exploited.

NULL Pointer Dereference in mrbvmexec with super in GitHub repository mruby/mruby prior to 3.2. This vulnerability is capable of making the mruby interpreter crash, thus affecting the availability of the system.

Use of Out-of-range Pointer Offset in Homebrew mruby prior to 3.2.