CVE-2022-1201 NULL Pointer Dereference in mrb_vm_exec with super in mruby/mruby

High 7.1 Published 2 Apr 2022 Updated 2 Aug 2024

An attacker can cause a denial of service by triggering a null pointer dereference in the mruby interpreter via the super keyword.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2022-1201?

CVE-2022-1201 is a high-severity vulnerability in mruby/mruby, published on 2 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

NULL Pointer Dereference in mrb_vm_exec 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.

Weakness: CWE-476

Which versions are affected by CVE-2022-1201?

It affects 1 product.

Products include Mruby Mruby.

How do I fix CVE-2022-1201?

Upgrade to a fixed version.

Is CVE-2022-1201 being exploited?

There is no known exploitation of CVE-2022-1201 in the wild and no public exploit code.

Sources

Also known as AZL-41093, DEBIAN-CVE-2022-1201, GHSA-p2wj-9vfc-2xj7, UBUNTU-CVE-2022-1201.