{"id":"CVE-2026-9639","summary":"Authenticated Denial of Service via Malicious Backup Tarball in LXD","details":"Nil-pointer dereference in CreateCustomVolumeFromBackup in LXD up to version 6.8 and 5.21 on Linux allows an authenticated user with can_create_storage_volumes permissions to cause a denial of service via a specially crafted custom-volume backup tarball that omits the expires_at snapshot field.","aliases":["GHSA-j93m-3j9p-m5m8"],"modified":"2026-07-09T04:02:34.655715716Z","published":"2026-06-26T15:39:04.696Z","database_specific":{"cna_assigner":"canonical","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/9xxx/CVE-2026-9639.json","cwe_ids":["CWE-476"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/9xxx/CVE-2026-9639.json"},{"type":"ADVISORY","url":"https://github.com/canonical/lxd/security/advisories/GHSA-j93m-3j9p-m5m8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-9639"},{"type":"FIX","url":"https://github.com/canonical/lxd/pull/18320"},{"type":"FIX","url":"https://github.com/canonical/lxd/pull/18390"},{"type":"PACKAGE","url":"https://github.com/canonical/lxd"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/canonical/lxd","events":[{"introduced":"13192d6c1abbfcc9da53ce4c8451abb6da3f5f65"},{"fixed":"28f4061af24739ae06b678c53f155c6c02357c92"},{"introduced":"0"},{"fixed":"0dc5080834a2cde19536a849c56931f6acb067f7"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"5.21.0"},{"fixed":"5.21.5"},{"introduced":"6.0"},{"fixed":"6.9"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-9639.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}