CVE-2022-46770

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 22.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-12-07 · updated 2026-06-17
Weakness: CWE-835

Description

qubes-mirage-firewall (aka Mirage firewall for QubesOS) 0.8.x through 0.8.3 allows guest OS users to cause a denial of service (CPU consumption and loss of forwarding) via a crafted multicast UDP packet (IP address range of 224.0.0.0 through 239.255.255.255).

Affected products

Linuxfoundation Mirage Firewall: from 0.8.0 before 0.8.4 — fixed in 0.8.4

How to fix

Upgrade to a fixed version: Linuxfoundation Mirage Firewall 0.8.4. Check the vendor advisory for mitigations.

References

http://packetstormsecurity.com/files/171610/Qubes-Mirage-Firewall-0.8.3-Denial-Of-Service.html
https://github.com/mirage/qubes-mirage-firewall/issues/166
http://packetstormsecurity.com/files/171610/Qubes-Mirage-Firewall-0.8.3-Denial-Of-Service.html
https://github.com/mirage/qubes-mirage-firewall/issues/166

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