CVE-2026-34177

CWE-1843 documents3 sources
Severity
9.1CRITICAL
EPSS
0.1%
top 71.77%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Canonical LXDGithub.com Canonical/lxd
Timeline
PublishedApr 9
Latest updateApr 10

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…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:HExploitability: 2.3 | Impact: 6.0

Affected Packages2 packages

▶CVEListV5canonical/lxd4.12.0 — 5.0.7+2
▶Gogithub.com/canonical/lxd0.0.0-20210305023314-538ac3df036e — 0.0.0-20260226085519-736f34afb267

🔴Vulnerability Details

2
GHSA
LXD: VM lowlevel restriction bypass via raw.apparmor and raw.qemu.conf↗2026-04-10
▶
CVEList
VM lowlevel restriction bypass via raw.apparmor and raw.qemu.conf↗2026-04-09
▶
CVE-2026-34177 (CRITICAL CVSS 9.1) | Canonical LXD versions 4.12 through | cvebase.io