{"id":"UBUNTU-CVE-2026-47753","details":"Incus is a system container and virtual machine manager. Prior to version 7.1.0, `(*backend).CreateInstanceFromBackup` in `internal/server/storage/backend.go` contains a nil-pointer dereference that an authenticated user with permission to create instances in any project can trigger remotely by uploading a crafted backup tarball. The Incus daemon panics and the process crashes, causing denial of service to every project on that cluster member. This is a sibling of `GHSA-fwj8-62r8-8p8m`, `GHSA-r7w7-mmxr-47r9`, and `GHSA-x5r6-jr56-89pv` (all assigned 2026-05-04). Those patches added guards on adjacent fields of the same `backup/config.Config` struct; the `Volume` field on the instance-import path was missed. Version 7.1.0 contains an updated patch.","modified":"2026-09-02T19:35:47.010368758Z","published":"2026-08-21T15:16:00Z","upstream":["CVE-2026-47753"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-47753"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-47753"},{"type":"REPORT","url":"https://github.com/lxc/incus/pull/3425"},{"type":"REPORT","url":"https://github.com/lxc/incus/security/advisories/GHSA-8g7m-96c8-8wwc"}],"affected":[{"package":{"name":"incus","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/incus?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.4-1ubuntu1","0.5.1-1","0.5.1-3","0.6-1","6.0.0-1","6.0.0-1ubuntu0.1","6.0.0-1ubuntu0.2","6.0.0-1ubuntu0.2+esm1","6.0.0-1ubuntu0.3","6.0.0-1ubuntu0.3+esm1","6.0.0-1ubuntu0.3+esm2","6.0.0-1ubuntu0.3+esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-lxc-incus-dev","binary_version":"6.0.0-1ubuntu0.3+esm3"},{"binary_version":"6.0.0-1ubuntu0.3+esm3","binary_name":"incus"},{"binary_version":"6.0.0-1ubuntu0.3+esm3","binary_name":"incus-agent"},{"binary_name":"incus-client","binary_version":"6.0.0-1ubuntu0.3+esm3"},{"binary_name":"incus-migrate","binary_version":"6.0.0-1ubuntu0.3+esm3"},{"binary_name":"incus-tools","binary_version":"6.0.0-1ubuntu0.3+esm3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47753.json"}},{"package":{"name":"incus","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/incus?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.0.3-4","6.0.4-2"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-lxc-incus-dev","binary_version":"6.0.4-2"},{"binary_version":"6.0.4-2","binary_name":"incus"},{"binary_name":"incus-agent","binary_version":"6.0.4-2"},{"binary_version":"6.0.4-2","binary_name":"incus-base"},{"binary_name":"incus-client","binary_version":"6.0.4-2"},{"binary_version":"6.0.4-2","binary_name":"incus-extra"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47753.json"}},{"package":{"name":"incus","ecosystem":"Ubuntu:Pro:26.04:LTS","purl":"pkg:deb/ubuntu/incus?arch=source&distro=esm-apps%2Fresolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.0.4-2","6.0.5-8","6.0.5-8ubuntu0.26.04.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-lxc-incus-dev","binary_version":"6.0.5-8ubuntu0.26.04.1~esm1"},{"binary_name":"incus","binary_version":"6.0.5-8ubuntu0.26.04.1~esm1"},{"binary_version":"6.0.5-8ubuntu0.26.04.1~esm1","binary_name":"incus-agent"},{"binary_name":"incus-base","binary_version":"6.0.5-8ubuntu0.26.04.1~esm1"},{"binary_version":"6.0.5-8ubuntu0.26.04.1~esm1","binary_name":"incus-client"},{"binary_name":"incus-extra","binary_version":"6.0.5-8ubuntu0.26.04.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47753.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U"},{"type":"Ubuntu","score":"medium"}]}