{"cve":"CVE-2026-34177","nvd":{"published":"2026-04-09T10:16:21.653","modified":"2026-10-26T21:10:00.170","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","score":9.1},"cwes":["CWE-184"],"references":["https://github.com/canonical/lxd/pull/17909","https://github.com/canonical/lxd/security/advisories/GHSA-fm2x-c5qw-4h6f","https://github.com/canonical/lxd/security/advisories/GHSA-fm2x-c5qw-4h6f"],"products":["canonical:lxd"],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-34177","score":0.00363,"percentile":0.29879,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-fm2x-c5qw-4h6f","url":"https://osv.dev/vulnerability/GHSA-fm2x-c5qw-4h6f","summary":"LXD: VM lowlevel restriction bypass via raw.apparmor and raw.qemu.conf","modified":"2026-08-11T23:55:53.782083587Z","packages":[{"ecosystem":"Go","name":"github.com/canonical/lxd","purl":"pkg:golang/github.com/canonical/lxd","ranges":[">=0.0.0-20210305023314-538ac3df036e <=0.0.0-20260226085519-736f34afb267"],"fixed":[]}]},{"id":"GO-2026-5368","url":"https://osv.dev/vulnerability/GO-2026-5368","summary":"VM lowlevel restriction bypass via raw.apparmor and raw.qemu.conf in github.com/canonical/lxd","modified":"2026-08-11T23:45:11.046246598Z","packages":[{"ecosystem":"Go","name":"github.com/canonical/lxd","purl":"pkg:golang/github.com/canonical/lxd","ranges":[">=0.0.0-20210305023314-538ac3df036e"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}