{"id":"USN-7852-2","summary":"libxml2 vulnerability","details":"\nUSN-7582-1 fixed a vulnerability in libxml2. This update provides the\ncorresponding fix for Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and\nUbuntu 20.04 LTS.\n\nOriginal advisory details:\n\n It was discovered that libxslt, used by libxml2, incorrectly handled\n certain attributes. An attacker could use this issue to cause a crash,\n resulting in a denial of service, or possibly execute arbitrary code. This\n update adds a fix to libxml2 to mitigate the libxslt vulnerability.","modified":"2026-02-10T04:50:20Z","published":"2025-11-27T14:12:04Z","related":["UBUNTU-CVE-2025-7425"],"upstream":["CVE-2025-7425","UBUNTU-CVE-2025-7425"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7852-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-7425"}],"affected":[{"package":{"name":"libxml2","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libxml2@2.9.3+dfsg1-1ubuntu0.7+esm11?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.3+dfsg1-1ubuntu0.7+esm11"}]}],"versions":["2.9.2+zdfsg1-4","2.9.2+zdfsg1-4ubuntu1","2.9.2+zdfsg1-4ubuntu2","2.9.2+zdfsg1-4ubuntu3","2.9.3+dfsg1-1","2.9.3+dfsg1-1ubuntu0.1","2.9.3+dfsg1-1ubuntu0.2","2.9.3+dfsg1-1ubuntu0.3","2.9.3+dfsg1-1ubuntu0.4","2.9.3+dfsg1-1ubuntu0.5","2.9.3+dfsg1-1ubuntu0.6","2.9.3+dfsg1-1ubuntu0.7","2.9.3+dfsg1-1ubuntu0.7+esm1","2.9.3+dfsg1-1ubuntu0.7+esm2","2.9.3+dfsg1-1ubuntu0.7+esm3","2.9.3+dfsg1-1ubuntu0.7+esm4","2.9.3+dfsg1-1ubuntu0.7+esm5","2.9.3+dfsg1-1ubuntu0.7+esm6","2.9.3+dfsg1-1ubuntu0.7+esm7","2.9.3+dfsg1-1ubuntu0.7+esm8","2.9.3+dfsg1-1ubuntu0.7+esm9","2.9.3+dfsg1-1ubuntu0.7+esm10"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"libxml2","binary_version":"2.9.3+dfsg1-1ubuntu0.7+esm11"},{"binary_name":"libxml2-dev","binary_version":"2.9.3+dfsg1-1ubuntu0.7+esm11"},{"binary_name":"libxml2-utils","binary_version":"2.9.3+dfsg1-1ubuntu0.7+esm11"},{"binary_name":"python-libxml2","binary_version":"2.9.3+dfsg1-1ubuntu0.7+esm11"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"id":"CVE-2025-7425","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7852-2.json"}},{"package":{"name":"libxml2","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libxml2@2.9.4+dfsg1-6.1ubuntu1.9+esm6?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.4+dfsg1-6.1ubuntu1.9+esm6"}]}],"versions":["2.9.4+dfsg1-4ubuntu1","2.9.4+dfsg1-5ubuntu1","2.9.4+dfsg1-5ubuntu2","2.9.4+dfsg1-5.1ubuntu1","2.9.4+dfsg1-5.2ubuntu1","2.9.4+dfsg1-6.1ubuntu1","2.9.4+dfsg1-6.1ubuntu1.2","2.9.4+dfsg1-6.1ubuntu1.3","2.9.4+dfsg1-6.1ubuntu1.4","2.9.4+dfsg1-6.1ubuntu1.5","2.9.4+dfsg1-6.1ubuntu1.6","2.9.4+dfsg1-6.1ubuntu1.7","2.9.4+dfsg1-6.1ubuntu1.8","2.9.4+dfsg1-6.1ubuntu1.9","2.9.4+dfsg1-6.1ubuntu1.9+esm1","2.9.4+dfsg1-6.1ubuntu1.9+esm2","2.9.4+dfsg1-6.1ubuntu1.9+esm3","2.9.4+dfsg1-6.1ubuntu1.9+esm4","2.9.4+dfsg1-6.1ubuntu1.9+esm5"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"libxml2","binary_version":"2.9.4+dfsg1-6.1ubuntu1.9+esm6"},{"binary_name":"libxml2-dev","binary_version":"2.9.4+dfsg1-6.1ubuntu1.9+esm6"},{"binary_name":"libxml2-utils","binary_version":"2.9.4+dfsg1-6.1ubuntu1.9+esm6"},{"binary_name":"python-libxml2","binary_version":"2.9.4+dfsg1-6.1ubuntu1.9+esm6"},{"binary_name":"python3-libxml2","binary_version":"2.9.4+dfsg1-6.1ubuntu1.9+esm6"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"id":"CVE-2025-7425","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7852-2.json"}},{"package":{"name":"libxml2","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/libxml2@2.9.10+dfsg-5ubuntu0.20.04.10+esm3?arch=source&distro=esm-infra/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.10+dfsg-5ubuntu0.20.04.10+esm3"}]}],"versions":["2.9.4+dfsg1-7ubuntu3","2.9.4+dfsg1-7ubuntu5","2.9.4+dfsg1-8ubuntu1","2.9.4+dfsg1-8ubuntu2","2.9.4+dfsg1-8ubuntu3","2.9.10+dfsg-1ubuntu3","2.9.10+dfsg-4build1","2.9.10+dfsg-5","2.9.10+dfsg-5ubuntu0.20.04.1","2.9.10+dfsg-5ubuntu0.20.04.2","2.9.10+dfsg-5ubuntu0.20.04.3","2.9.10+dfsg-5ubuntu0.20.04.4","2.9.10+dfsg-5ubuntu0.20.04.5","2.9.10+dfsg-5ubuntu0.20.04.6","2.9.10+dfsg-5ubuntu0.20.04.7","2.9.10+dfsg-5ubuntu0.20.04.8","2.9.10+dfsg-5ubuntu0.20.04.9","2.9.10+dfsg-5ubuntu0.20.04.10","2.9.10+dfsg-5ubuntu0.20.04.10+esm1","2.9.10+dfsg-5ubuntu0.20.04.10+esm2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"libxml2","binary_version":"2.9.10+dfsg-5ubuntu0.20.04.10+esm3"},{"binary_name":"libxml2-dev","binary_version":"2.9.10+dfsg-5ubuntu0.20.04.10+esm3"},{"binary_name":"libxml2-utils","binary_version":"2.9.10+dfsg-5ubuntu0.20.04.10+esm3"},{"binary_name":"python-libxml2","binary_version":"2.9.10+dfsg-5ubuntu0.20.04.10+esm3"},{"binary_name":"python3-libxml2","binary_version":"2.9.10+dfsg-5ubuntu0.20.04.10+esm3"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:20.04:LTS","cves":[{"id":"CVE-2025-7425","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7852-2.json"}}],"schema_version":"1.7.3"}