CVE-2022-0247 Write access to VMO data through copy-on-write in Fuchsia

High 7.5 Published 25 Feb 2022 Updated 21 Apr 2025

A local attacker can modify Virtual Memory Object data via copy-on-write snapshots, bypassing permissions to alter protected memory.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-0247?

CVE-2022-0247 is a high-severity vulnerability in Google LLC Fuchsia, published on 25 Feb 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue exists in Fuchsia where VMO data can be modified through access to copy-on-write snapshots. A local attacker could modify objects in the VMO that they do not have permission to. We recommend upgrading past commit d97c05d2301799ed585620a9c5c739d36e7b5d3d or any of the listed versions.

Weakness: CWE-732

Which versions are affected by CVE-2022-0247?

It affects 1 product.

Products include Google Fuchsia.

How do I fix CVE-2022-0247?

No fix has been published for CVE-2022-0247 yet. Limit exposure of the affected software until one is available.

Is CVE-2022-0247 being exploited?

There is no known exploitation of CVE-2022-0247 in the wild and no public exploit code.

Sources

Also known as GHSA-hf4w-4cm7-39h3.