CVE-2026-34177

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Source
https://cve.org/CVERecord?id=CVE-2026-34177
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34177.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-34177
Aliases
Downstream
Published
2026-04-09T09:15:27.532Z
Modified
2026-07-15T01:49:15.073689834Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
VM lowlevel restriction bypass via raw.apparmor and raw.qemu.conf
Details

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.

Database specific 
{
    "cna_assigner": "canonical",
    "cwe_ids": [
        "CWE-184"
    ],
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "6.0.0"
                },
                {
                    "fixed": "6.8.0"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34177.json"
}
References

Affected packages

Git / github.com/canonical/lxd

Affected ranges

Type
GIT
Repo
https://github.com/canonical/lxd
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
7b1f0b6acefa288398ead8dda48b046d7b2795a3
Fixed
28f4061af24739ae06b678c53f155c6c02357c92
Database specific 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "4.12.0"
        },
        {
            "fixed": "5.0.7"
        },
        {
            "introduced": "5.1.0"
        },
        {
            "fixed": "5.21.5"
        }
    ]
}

Affected versions

lxd-0.*
lxd-0.1
lxd-0.10
lxd-0.11
lxd-0.12
lxd-0.13
lxd-0.14
lxd-0.15
lxd-0.16
lxd-0.17
lxd-0.18
lxd-0.19
lxd-0.2
lxd-0.20
lxd-0.21
lxd-0.22
lxd-0.23
lxd-0.24
lxd-0.25
lxd-0.26
lxd-0.27
lxd-0.3
lxd-0.4
lxd-0.5
lxd-0.6
lxd-0.7
lxd-0.8
lxd-0.8.1
lxd-0.9
lxd-2.*
lxd-2.0.0
lxd-2.0.0.beta1
lxd-2.0.0.beta2
lxd-2.0.0.beta3
lxd-2.0.0.beta4
lxd-2.0.0.rc1
lxd-2.0.0.rc2
lxd-2.0.0.rc3
lxd-2.0.0.rc4
lxd-2.0.0.rc5
lxd-2.0.0.rc6
lxd-2.0.0.rc7
lxd-2.0.0.rc8
lxd-2.0.0.rc9
lxd-2.1
lxd-2.10
lxd-2.10.1
lxd-2.11
lxd-2.12
lxd-2.13
lxd-2.14
lxd-2.15
lxd-2.16
lxd-2.17
lxd-2.18
lxd-2.19
lxd-2.2
lxd-2.20
lxd-2.21
lxd-2.3
lxd-2.4
lxd-2.4.1
lxd-2.5
lxd-2.6
lxd-2.6.1
lxd-2.6.2
lxd-2.7
lxd-2.8
lxd-2.9
lxd-2.9.1
lxd-2.9.2
lxd-2.9.3
lxd-3.*
lxd-3.0.0
lxd-3.0.0.beta1
lxd-3.0.0.beta2
lxd-3.0.0.beta3
lxd-3.0.0.beta4
lxd-3.0.0.beta5
lxd-3.0.0.beta6
lxd-3.0.0.beta7
lxd-3.1
lxd-3.10
lxd-3.11
lxd-3.12
lxd-3.13
lxd-3.14
lxd-3.15
lxd-3.16
lxd-3.17
lxd-3.18
lxd-3.19
lxd-3.2
lxd-3.20
lxd-3.21
lxd-3.22
lxd-3.23
lxd-3.3
lxd-3.4
lxd-3.5
lxd-3.6
lxd-3.7
lxd-3.8
lxd-3.9
lxd-4.*
lxd-4.0.0
lxd-4.1
lxd-4.10
lxd-4.11
lxd-4.12
lxd-4.13
lxd-4.14
lxd-4.15
lxd-4.16
lxd-4.17
lxd-4.18
lxd-4.19
lxd-4.2
lxd-4.20
lxd-4.21
lxd-4.22
lxd-4.23
lxd-4.24
lxd-4.3
lxd-4.4
lxd-4.5
lxd-4.6
lxd-4.7
lxd-4.8
lxd-4.9
lxd-5.*
lxd-5.0.0
lxd-5.0.1
lxd-5.0.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34177.json"