{"id":"CVE-2026-9639","title":"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-volum…","summary":"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-volum…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-476"],"vendor":"canonical","product":"lxd","affected":["lxd >= 5.0.0, < 5.21.5","lxd >= 6.0, < 6.9"],"patched":["lxd 6.9"],"published":"2026-06-26","updated":"2026-07-02","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-9639","references":[{"url":"https://github.com/canonical/lxd/pull/18320","label":"security@ubuntu.com"},{"url":"https://github.com/canonical/lxd/pull/18390","label":"security@ubuntu.com"},{"url":"https://github.com/canonical/lxd/security/advisories/GHSA-j93m-3j9p-m5m8","label":"security@ubuntu.com"},{"url":"https://github.com/canonical/lxd/security/advisories/GHSA-j93m-3j9p-m5m8","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00548,"epssPercentile":0.44565,"ingestedAt":"2026-07-03T13:02:28.085Z","slug":"CVE-2026-9639","body":"## Overview\n\nNil-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.\n\n## Affected\n\n- `lxd >= 5.0.0, < 5.21.5`\n- `lxd >= 6.0, < 6.9`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `lxd 6.9`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}