CVE-2022-1050 Use after free in QEMU

High 8.8 Published 29 Mar 2022 Updated 2 Aug 2024

A crafted guest driver can trigger a use-after-free in QEMU's paravirtual RDMA device, potentially allowing code execution or privilege escalation.

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

What is CVE-2022-1050?

CVE-2022-1050 is a high-severity use after free vulnerability in Qemu Qemu, published on 29 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. This flaw allows a crafted guest driver to execute HW commands when shared buffers are not yet allocated, potentially leading to a use-after-free condition.

Weakness: CWE-416

Which versions are affected by CVE-2022-1050?

It affects 1 product.

Linux distribution packages (1)

qemu openSUSE:Tumbleweed All versions 7.1.0-12.1

Products include Qemu Qemu.

How do I fix CVE-2022-1050?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2022-1050 being exploited?

There is no known exploitation of CVE-2022-1050 in the wild and no public exploit code.

All Qemu Qemu vulnerabilities

Sources

Also known as AZL-9277, DEBIAN-CVE-2022-1050, GHSA-hgm4-v6hc-gqq9, OESA-2023-1298, UBUNTU-CVE-2022-1050, openSUSE-SU-2024:12736-1.