CVE-2025-52889 LOW

CVE-2025-52889: Incus vulnerable to DoS through antispoofing nftables firewall rule bypass on bridge networks with ACLs

Vendor Lxc
Product incus
Weakness CWE-770 · Uncontrolled resource consumption
Published June 25, 2025
Last update June 25, 2025
View on NVD All CVEs

CVSS base score

3.4/10
Attack vector Adjacent
Attack complexity Low
Privileges required High
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L

What the vulnerability does

01Description

Incus is a system container and virtual machine manager. When using an ACL on a device connected to a bridge, Incus version 6.12 and 6.13 generates nftables rules for local services (DHCP, DNS...) that partially bypass security options `security.mac_filtering`, `security.ipv4_filtering` and `security.ipv6_filtering`. This can lead to DHCP pool exhaustion and opens the door for other attacks. A patch is available at commit 2516fb19ad8428454cb4edfe70c0a5f0dc1da214.

Key dates

02Disclosure timeline

June 25, 2025 CVE published
June 25, 2025 Record updated