{"id":"CVE-2026-34177","revision":"868097359ea348e287c09a0880bf0a7e","records":[{"revision":"868097359ea348e287c09a0880bf0a7e","observedAt":"2026-10-27T09:03:00.507+00:00","statement":{"source":"nvd","id":"CVE-2026-34177","aliases":[],"title":"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-…","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.","state":0,"publishedAt":"2026-04-09T10:16:21.653+00:00","modifiedAt":"2026-10-26T21:10:00.17+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security@ubuntu.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","score":9.1,"severity":"CRITICAL"}],"references":["https://github.com/canonical/lxd/pull/17909","https://github.com/canonical/lxd/security/advisories/GHSA-fm2x-c5qw-4h6f"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-34177","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-184"],"productCriteria":["cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-04-09T10:16:21.653","lastModified":"2026-10-26T21:10:00.170"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-34177","identifiers":["CVE-2026-34177"]},"retained":false,"historicalAffected":[]}],"coverage":[]}