Description
Incus is a system container and virtual machine manager. When using an ACL on a device connected to a bridge, Incus versions 6.12 and 6.13generates nftables rules that partially bypass security options `security.mac_filtering`, `security.ipv4_filtering` and `security.ipv6_filtering`. This can lead to ARP spoofing on the bridge and to fully spoof another VM/container on the same bridge. Commit 254dfd2483ab8de39b47c2258b7f1cf0759231c8 contains a patch for the issue.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_confirm
https://github.com/lxc/incus/security/advisories/GHSA-p7fw-vjjm-2rwp
Patch x_refsource_misc
https://github.com/lxc/incus/commit/254dfd2483ab8de39b47c2258b7f1cf0759231c8
Scores
CVSS v3
8.1
EPSS
0.0012
EPSS Percentile
31.1%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-863
Status
published
Products (2)
lxc/incus
6.12.0 - 6.14.0Go
lxc/incus
>= 6.12, <= 6.13
Published
Jun 25, 2025
Tracked Since
Feb 18, 2026