{"id":"UBUNTU-CVE-2022-40303","details":"An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to access an array at a negative 2GB offset, typically leading to a segmentation fault.","modified":"2026-01-30T02:08:30.378457Z","published":"2022-11-23T00:15:00Z","related":["USN-5760-1","USN-5760-2"],"upstream":["CVE-2022-40303"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-40303"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5760-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5760-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2022-40303"}],"affected":[{"package":{"name":"libxml2","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/libxml2@2.9.1+dfsg1-3ubuntu4.13+esm4?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.1+dfsg1-3ubuntu4.13+esm4"}]}],"versions":["2.9.1+dfsg1-3ubuntu2","2.9.1+dfsg1-3ubuntu3","2.9.1+dfsg1-3ubuntu4","2.9.1+dfsg1-3ubuntu4.1","2.9.1+dfsg1-3ubuntu4.2","2.9.1+dfsg1-3ubuntu4.3","2.9.1+dfsg1-3ubuntu4.4","2.9.1+dfsg1-3ubuntu4.5","2.9.1+dfsg1-3ubuntu4.6","2.9.1+dfsg1-3ubuntu4.7","2.9.1+dfsg1-3ubuntu4.8","2.9.1+dfsg1-3ubuntu4.9","2.9.1+dfsg1-3ubuntu4.10","2.9.1+dfsg1-3ubuntu4.11","2.9.1+dfsg1-3ubuntu4.12","2.9.1+dfsg1-3ubuntu4.13","2.9.1+dfsg1-3ubuntu4.13+esm1","2.9.1+dfsg1-3ubuntu4.13+esm2","2.9.1+dfsg1-3ubuntu4.13+esm3"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"libxml2","binary_version":"2.9.1+dfsg1-3ubuntu4.13+esm4"},{"binary_name":"libxml2-dev","binary_version":"2.9.1+dfsg1-3ubuntu4.13+esm4"},{"binary_name":"libxml2-utils","binary_version":"2.9.1+dfsg1-3ubuntu4.13+esm4"},{"binary_name":"python-libxml2","binary_version":"2.9.1+dfsg1-3ubuntu4.13+esm4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-40303.json"}},{"package":{"name":"libxml2","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libxml2@2.9.3+dfsg1-1ubuntu0.7+esm4?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.3+dfsg1-1ubuntu0.7+esm4"}]}],"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"],"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+esm4"},{"binary_name":"libxml2-dev","binary_version":"2.9.3+dfsg1-1ubuntu0.7+esm4"},{"binary_name":"libxml2-utils","binary_version":"2.9.3+dfsg1-1ubuntu0.7+esm4"},{"binary_name":"python-libxml2","binary_version":"2.9.3+dfsg1-1ubuntu0.7+esm4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-40303.json"}},{"package":{"name":"libxml2","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libxml2@2.9.4+dfsg1-6.1ubuntu1.8?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.4+dfsg1-6.1ubuntu1.8"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libxml2","binary_version":"2.9.4+dfsg1-6.1ubuntu1.8"},{"binary_name":"libxml2-dev","binary_version":"2.9.4+dfsg1-6.1ubuntu1.8"},{"binary_name":"libxml2-utils","binary_version":"2.9.4+dfsg1-6.1ubuntu1.8"},{"binary_name":"python-libxml2","binary_version":"2.9.4+dfsg1-6.1ubuntu1.8"},{"binary_name":"python3-libxml2","binary_version":"2.9.4+dfsg1-6.1ubuntu1.8"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-40303.json"}},{"package":{"name":"libxml2","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libxml2@2.9.10+dfsg-5ubuntu0.20.04.5?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.10+dfsg-5ubuntu0.20.04.5"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libxml2","binary_version":"2.9.10+dfsg-5ubuntu0.20.04.5"},{"binary_name":"libxml2-dev","binary_version":"2.9.10+dfsg-5ubuntu0.20.04.5"},{"binary_name":"libxml2-utils","binary_version":"2.9.10+dfsg-5ubuntu0.20.04.5"},{"binary_name":"python-libxml2","binary_version":"2.9.10+dfsg-5ubuntu0.20.04.5"},{"binary_name":"python3-libxml2","binary_version":"2.9.10+dfsg-5ubuntu0.20.04.5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-40303.json"}},{"package":{"name":"libxml2","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libxml2@2.9.13+dfsg-1ubuntu0.2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.13+dfsg-1ubuntu0.2"}]}],"versions":["2.9.12+dfsg-4","2.9.12+dfsg-5","2.9.12+dfsg-6","2.9.13+dfsg-1","2.9.13+dfsg-1build1","2.9.13+dfsg-1ubuntu0.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libxml2","binary_version":"2.9.13+dfsg-1ubuntu0.2"},{"binary_name":"libxml2-dev","binary_version":"2.9.13+dfsg-1ubuntu0.2"},{"binary_name":"libxml2-utils","binary_version":"2.9.13+dfsg-1ubuntu0.2"},{"binary_name":"python3-libxml2","binary_version":"2.9.13+dfsg-1ubuntu0.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-40303.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}