{"id":"UBUNTU-CVE-2026-115377","details":"Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability that allows malicious migration sources to write host files by planting symlinks in transferred volumes. Attackers can craft rsync or btrfs receive streams with a symlink such as rootfs pointing to the host root, writing files as root for full host compromise.","modified":"2026-10-27T04:17:46.408325Z","published":"2026-10-26T00:00:00Z","upstream":["CVE-2026-115377"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-115377"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-115377"},{"type":"REPORT","url":"https://github.com/lxc/incus/security/advisories/GHSA-579w-c4rw-c8q3"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/incus-before-6.0.7-6.1.0-before-7.0.2-and-7.1.0-before-7.5.0-arbitrary-file-write-via-symlink-in-migration-stream"}],"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_name":"incus-agent","binary_version":"6.0.0-1ubuntu0.3+esm3"},{"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-2026-115377.json"}},{"package":{"name":"incus","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/incus?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.0.5-8","7.0.1-5"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-lxc-incus-dev","binary_version":"7.0.1-5"},{"binary_version":"7.0.1-5","binary_name":"incus"},{"binary_name":"incus-agent","binary_version":"7.0.1-5"},{"binary_name":"incus-base","binary_version":"7.0.1-5"},{"binary_name":"incus-client","binary_version":"7.0.1-5"},{"binary_name":"incus-extra","binary_version":"7.0.1-5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115377.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_version":"6.0.5-8ubuntu0.26.04.1~esm1","binary_name":"golang-github-lxc-incus-dev"},{"binary_version":"6.0.5-8ubuntu0.26.04.1~esm1","binary_name":"incus"},{"binary_name":"incus-agent","binary_version":"6.0.5-8ubuntu0.26.04.1~esm1"},{"binary_version":"6.0.5-8ubuntu0.26.04.1~esm1","binary_name":"incus-base"},{"binary_name":"incus-client","binary_version":"6.0.5-8ubuntu0.26.04.1~esm1"},{"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-2026-115377.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"},{"type":"Ubuntu","score":"medium"}]}