Report: Update: CVE-2026-34177 - VM lowlevel restriction bypass via raw.apparmor and raw.qemu.conf

Report: Update: CVE-2026-34177 - VM lowlevel restriction bypass via raw.apparmor and raw.qemu.conf

CVE ID :CVE-2026-34177 Published : April 9, 2026, 10:16 a.m. | 35 minutes ago Description :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. Severity: 9.1 | CRITICAL Visit the link for more details, such as CVSS details, affected products, timeline, and more...

CVE Details

Severity
CRITICAL
Published
April 9, 2026
Impact: privilege escalation