{"id":"USN-8826-1","summary":"lxc vulnerabilities","details":"Maher Azzouzi discovered that LXC did not correctly handle logging\ncertain failure messages. An attacker could possibly use this issue\nto leak sensitive information. This issue only affected\nUbuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS,\nUbuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2022-47952)\n\nSam Sanoop discovered that LXC did not correctly handle certain forms\nof user authorization. An attacker could possibly use this issue to\ncause a denial of service. (CVE-2026-39402)","modified":"2026-09-28T11:42:19.518386733Z","published":"2026-09-28T05:47:13Z","related":["UBUNTU-CVE-2022-47952","UBUNTU-CVE-2026-39402"],"upstream":["CVE-2022-47952","CVE-2026-39402","UBUNTU-CVE-2022-47952","UBUNTU-CVE-2026-39402"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8826-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-47952"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-39402"}],"affected":[{"package":{"name":"lxc","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/lxc?arch=source&distro=esm-infra-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.11-0ubuntu1~16.04.3+esm1"}]}],"versions":["1.1.4-0ubuntu1","1.1.4-0ubuntu1.1","1.1.4-0ubuntu3","1.1.5-0ubuntu1","1.1.5-0ubuntu2","1.1.5-0ubuntu3","1.1.5-0ubuntu4","1.1.5-0ubuntu5","1.1.5-0ubuntu6","2.0.0~beta2-0ubuntu2","2.0.0~rc1-0ubuntu1","2.0.0~rc2-0ubuntu2","2.0.0~rc3-0ubuntu1","2.0.0~rc3-0ubuntu2","2.0.0~rc3-0ubuntu3","2.0.0~rc4-0ubuntu1","2.0.0~rc5-0ubuntu1","2.0.0~rc9-0ubuntu1","2.0.0~rc10-0ubuntu1","2.0.0~rc10-0ubuntu2","2.0.0~rc11-0ubuntu1","2.0.0~rc12-0ubuntu1","2.0.0~rc13-0ubuntu2","2.0.0~rc14-0ubuntu2","2.0.0~rc15-0ubuntu1","2.0.0-0ubuntu1","2.0.0-0ubuntu2","2.0.1-0ubuntu1~16.04.1","2.0.3-0ubuntu1~ubuntu16.04.1","2.0.4-0ubuntu1~ubuntu16.04.2","2.0.5-0ubuntu1~ubuntu16.04.1","2.0.5-0ubuntu1~ubuntu16.04.2","2.0.5-0ubuntu1~ubuntu16.04.3","2.0.6-0ubuntu1~ubuntu16.04.1","2.0.6-0ubuntu1~ubuntu16.04.2","2.0.7-0ubuntu1~16.04.1","2.0.7-0ubuntu1~16.04.2","2.0.8-0ubuntu1~16.04.2","2.0.11-0ubuntu1~16.04.3"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro","binaries":[{"binary_name":"liblxc1","binary_version":"2.0.11-0ubuntu1~16.04.3+esm1"},{"binary_name":"lua-lxc","binary_version":"2.0.11-0ubuntu1~16.04.3+esm1"},{"binary_name":"lxc","binary_version":"2.0.11-0ubuntu1~16.04.3+esm1"},{"binary_version":"2.0.11-0ubuntu1~16.04.3+esm1","binary_name":"lxc-common"},{"binary_name":"lxc-templates","binary_version":"2.0.11-0ubuntu1~16.04.3+esm1"},{"binary_name":"lxc-tests","binary_version":"2.0.11-0ubuntu1~16.04.3+esm1"},{"binary_name":"lxc1","binary_version":"2.0.11-0ubuntu1~16.04.3+esm1"},{"binary_name":"python3-lxc","binary_version":"2.0.11-0ubuntu1~16.04.3+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8826-1.json","cves_map":{"cves":[{"id":"CVE-2022-47952","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"type":"Ubuntu","score":"low"}]},{"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-39402"}],"ecosystem":"Ubuntu:Pro:16.04:LTS"}}},{"package":{"name":"lxc","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/lxc?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.3-0ubuntu1~18.04.3+esm1"}]}],"versions":["2.1.0-0ubuntu1","2.1.1-0ubuntu1","3.0.0~beta1-0ubuntu3","3.0.0~beta2-0ubuntu2","3.0.0~beta3-0ubuntu1","3.0.0~beta4-0ubuntu1","3.0.0-0ubuntu1","3.0.0-0ubuntu2","3.0.1-0ubuntu1~18.04.1","3.0.1-0ubuntu1~18.04.2","3.0.2-0ubuntu1~18.04.1","3.0.3-0ubuntu1~18.04.1","3.0.3-0ubuntu1~18.04.3"],"ecosystem_specific":{"binaries":[{"binary_name":"liblxc-common","binary_version":"3.0.3-0ubuntu1~18.04.3+esm1"},{"binary_name":"liblxc1","binary_version":"3.0.3-0ubuntu1~18.04.3+esm1"},{"binary_version":"3.0.3-0ubuntu1~18.04.3+esm1","binary_name":"libpam-cgfs"},{"binary_version":"3.0.3-0ubuntu1~18.04.3+esm1","binary_name":"lxc"},{"binary_version":"3.0.3-0ubuntu1~18.04.3+esm1","binary_name":"lxc-utils"},{"binary_version":"3.0.3-0ubuntu1~18.04.3+esm1","binary_name":"lxc1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2022-47952","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"type":"Ubuntu","score":"low"}]},{"id":"CVE-2026-39402","severity":[{"score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H","type":"CVSS_V4"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:18.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8826-1.json"}},{"package":{"name":"lxc","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/lxc?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.0.12-0ubuntu1~20.04.1+esm1"}]}],"versions":["3.0.4-0ubuntu1","3.0.4-0ubuntu2","1:4.0.0-0ubuntu2","1:4.0.1-0ubuntu1","1:4.0.1-0ubuntu2","1:4.0.2-0ubuntu1","1:4.0.6-0ubuntu1~20.04.1","1:4.0.12-0ubuntu1~20.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1:4.0.12-0ubuntu1~20.04.1+esm1","binary_name":"liblxc-common"},{"binary_name":"liblxc1","binary_version":"1:4.0.12-0ubuntu1~20.04.1+esm1"},{"binary_name":"libpam-cgfs","binary_version":"1:4.0.12-0ubuntu1~20.04.1+esm1"},{"binary_name":"lxc","binary_version":"1:4.0.12-0ubuntu1~20.04.1+esm1"},{"binary_name":"lxc-utils","binary_version":"1:4.0.12-0ubuntu1~20.04.1+esm1"},{"binary_version":"1:4.0.12-0ubuntu1~20.04.1+esm1","binary_name":"lxc1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:20.04:LTS","cves":[{"id":"CVE-2022-47952","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"score":"low","type":"Ubuntu"}]},{"id":"CVE-2026-39402","severity":[{"score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H","type":"CVSS_V4"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8826-1.json"}},{"package":{"name":"lxc","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/lxc?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1"}]}],"versions":["1:4.0.10-0ubuntu5","1:4.0.12-0ubuntu1","1:4.0.12-0ubuntu2","1:5.0.0~git2209-g5a7b9ce67-0ubuntu1","1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1","binary_name":"liblxc-common"},{"binary_version":"1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1","binary_name":"liblxc1"},{"binary_name":"libpam-cgfs","binary_version":"1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1"},{"binary_version":"1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1","binary_name":"lxc"},{"binary_name":"lxc-utils","binary_version":"1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1"},{"binary_name":"lxc1","binary_version":"1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8826-1.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2022-47952"},{"id":"CVE-2026-39402","severity":[{"score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H","type":"CVSS_V4"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:Pro:22.04:LTS"}}},{"package":{"name":"lxc","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/lxc?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.0.3-2ubuntu7.3+esm1"}]}],"versions":["1:5.0.1-0ubuntu7","1:5.0.1-0ubuntu8","1:5.0.3-2ubuntu5","1:5.0.3-2ubuntu7","1:5.0.3-2ubuntu7.1","1:5.0.3-2ubuntu7.2","1:5.0.3-2ubuntu7.3"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"1:5.0.3-2ubuntu7.3+esm1","binary_name":"liblxc-common"},{"binary_version":"1:5.0.3-2ubuntu7.3+esm1","binary_name":"liblxc1t64"},{"binary_version":"1:5.0.3-2ubuntu7.3+esm1","binary_name":"libpam-cgfs"},{"binary_name":"lxc","binary_version":"1:5.0.3-2ubuntu7.3+esm1"},{"binary_name":"lxc-tests","binary_version":"1:5.0.3-2ubuntu7.3+esm1"},{"binary_name":"lxc-utils","binary_version":"1:5.0.3-2ubuntu7.3+esm1"},{"binary_name":"lxc1","binary_version":"1:5.0.3-2ubuntu7.3+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8826-1.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"low"}],"id":"CVE-2022-47952"},{"id":"CVE-2026-39402","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:Pro:24.04:LTS"}}},{"package":{"name":"lxc","ecosystem":"Ubuntu:Pro:26.04:LTS","purl":"pkg:deb/ubuntu/lxc?arch=source&distro=esm-apps%2Fresolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:6.0.6-1ubuntu1+esm1"}]}],"versions":["1:6.0.4-4ubuntu1","1:6.0.6-1","1:6.0.6-1ubuntu1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"1:6.0.6-1ubuntu1+esm1","binary_name":"liblxc-common"},{"binary_name":"liblxc1t64","binary_version":"1:6.0.6-1ubuntu1+esm1"},{"binary_version":"1:6.0.6-1ubuntu1+esm1","binary_name":"libpam-cgfs"},{"binary_name":"lxc","binary_version":"1:6.0.6-1ubuntu1+esm1"},{"binary_version":"1:6.0.6-1ubuntu1+esm1","binary_name":"lxc-tests"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:26.04:LTS","cves":[{"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H"},{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-39402"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8826-1.json"}}],"schema_version":"1.9.0"}