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

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-02-25 · updated 2026-06-17
Weakness: CWE-732

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.

Affected products

Google LLC Fuchsia Kernel: before 2022-01-03 — fixed in 2022-01-03

How to fix

Upgrade to a fixed version: Google LLC Fuchsia Kernel 2022-01-03. Check the vendor advisory for mitigations.

References

https://fuchsia.googlesource.com/fuchsia/+/d97c05d2301799ed585620a9c5c739d36e7b5d3d
https://fuchsia.googlesource.com/fuchsia/+/d97c05d2301799ed585620a9c5c739d36e7b5d3d

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