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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| lxc | incus | >= 6.12, <= 6.13 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | incus | No fix yet | — |
| Ubuntu 25.10 | incus | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | govulncheck-vulndb | 0.0.20250730T213748-1.1 | openSUSE-SU-2025:15405-1 |
| openSUSE Tumbleweed | incus | 6.14-1.1 | openSUSE-SU-2025:15317-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | incus-feature | 6.14.0-r0 | — |
| Alpine v3.23 | incus-feature | 6.14.0-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/lxc/incus | all versions | — | GO-2025-3782 |
| Go | github.com/lxc/incus/v6 | >= 6.12.0, < 6.14.0 | 6.14.0 | GHSA-p7fw-vjjm-2rwp |
Advisories 2
- openSUSE-SU-2025:15405-1 govulncheck-vulndb-0.0.20250730T213748-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15317-1 incus-6.14-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026