incus: Canonical LXD versions 4.12 through 6.7 contain an incomplete denylist in isVMLowLevelOptionForbidden (lxd/project/li...
CVE-2026-34177 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-34177, released April 9, 2026. It is not reported as exploited. Patch Radar priority: Urgent.
Canonical LXD versions 4.12 through 6.7 contain an incomplete denylist in isVMLowLevelOptionForbidden (lxd/project/limits/permissions.go), which omits raw.apparmor and raw.qemu.conf from the set of keys blocked under the restricted.virtual-machines.lowlevel=block project restriction. A remote attacker with can_edit permission on a VM instance in a restricted project can inject an AppArmor rule and a QEMU chardev configuration that bridges the LXD Unix socket into the guest VM, enabling privilege escalation to LXD cluster administrator and subsequently to host root.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| govulncheck-vulndb · opensuse-leap 16.0 | 0.0.20260827T195228-160000.1.1 | OPENSUSE-SU-2026:21761-1 | Sep 4, 2026 |
| govulncheck-vulndb · sles 16.0 | 0.0.20260827T195228-160000.1.1 | SUSE-SU-2026:23625-1 | Sep 4, 2026 |
| incus · Debian 13.5 (trixie) | 6.0.2-1 | DEBIAN-CVE-2026-34177 | Apr 9, 2026 |
| incus · Debian 14 | 6.0.2-1 | DEBIAN-CVE-2026-34177 | Apr 9, 2026 |
| lxd · Debian 13.5 (trixie) | 5.0.2+git20231211.1364ae4-9+deb13u5 | DEBIAN-CVE-2026-34177 | Apr 9, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.