{"id":"UBUNTU-CVE-2025-7425","details":"A flaw was found in libxslt where the attribute type, atype, flags are modified in a way that corrupts internal memory management. When XSLT functions, such as the key() process, result in tree fragments, this corruption prevents the proper cleanup of ID attributes. As a result, the system may access freed memory, causing crashes or enabling attackers to trigger heap corruption.","modified":"2026-05-20T16:11:31.629867096Z","published":"2025-07-10T14:15:00Z","related":["USN-7852-1","USN-7852-2","USN-7896-1"],"upstream":["CVE-2025-7425"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-7425"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-7425"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2025-7425"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7852-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7852-2"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7896-1"}],"affected":[{"package":{"name":"libxml2","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/libxml2?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.1+dfsg1-3ubuntu4.13+esm10"}]}],"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","2.9.1+dfsg1-3ubuntu4.13+esm4","2.9.1+dfsg1-3ubuntu4.13+esm5","2.9.1+dfsg1-3ubuntu4.13+esm6","2.9.1+dfsg1-3ubuntu4.13+esm7","2.9.1+dfsg1-3ubuntu4.13+esm8","2.9.1+dfsg1-3ubuntu4.13+esm9"],"ecosystem_specific":{"binaries":[{"binary_name":"libxml2","binary_version":"2.9.1+dfsg1-3ubuntu4.13+esm10"},{"binary_version":"2.9.1+dfsg1-3ubuntu4.13+esm10","binary_name":"libxml2-utils"},{"binary_name":"python-libxml2","binary_version":"2.9.1+dfsg1-3ubuntu4.13+esm10"}],"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-7425.json"}},{"package":{"name":"libxml2","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libxml2?arch=source&distro=esm-infra%2Fxenial"},"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":{"binaries":[{"binary_version":"2.9.3+dfsg1-1ubuntu0.7+esm11","binary_name":"libxml2"},{"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"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-7425.json"}},{"package":{"name":"libxml2","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libxml2?arch=source&distro=esm-infra%2Fbionic"},"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-utils","binary_version":"2.9.4+dfsg1-6.1ubuntu1.9+esm6"},{"binary_version":"2.9.4+dfsg1-6.1ubuntu1.9+esm6","binary_name":"python-libxml2"},{"binary_name":"python3-libxml2","binary_version":"2.9.4+dfsg1-6.1ubuntu1.9+esm6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-7425.json"}},{"package":{"name":"libxml2","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/libxml2?arch=source&distro=esm-infra%2Ffocal"},"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_version":"2.9.10+dfsg-5ubuntu0.20.04.10+esm3","binary_name":"libxml2-utils"},{"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":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-7425.json"}},{"package":{"name":"libxml2","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libxml2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.13+dfsg-1ubuntu0.10"}]}],"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","2.9.13+dfsg-1ubuntu0.2","2.9.13+dfsg-1ubuntu0.3","2.9.13+dfsg-1ubuntu0.4","2.9.13+dfsg-1ubuntu0.5","2.9.13+dfsg-1ubuntu0.6","2.9.13+dfsg-1ubuntu0.7","2.9.13+dfsg-1ubuntu0.8","2.9.13+dfsg-1ubuntu0.9"],"ecosystem_specific":{"binaries":[{"binary_version":"2.9.13+dfsg-1ubuntu0.10","binary_name":"libxml2"},{"binary_name":"libxml2-utils","binary_version":"2.9.13+dfsg-1ubuntu0.10"},{"binary_name":"python3-libxml2","binary_version":"2.9.13+dfsg-1ubuntu0.10"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-7425.json"}},{"package":{"name":"libxml2","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libxml2?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.14+dfsg-1.3ubuntu3.6"}]}],"versions":["2.9.14+dfsg-1.3","2.9.14+dfsg-1.3build1","2.9.14+dfsg-1.3build2","2.9.14+dfsg-1.3build3","2.9.14+dfsg-1.3ubuntu1","2.9.14+dfsg-1.3ubuntu2","2.9.14+dfsg-1.3ubuntu3","2.9.14+dfsg-1.3ubuntu3.1","2.9.14+dfsg-1.3ubuntu3.2","2.9.14+dfsg-1.3ubuntu3.3","2.9.14+dfsg-1.3ubuntu3.4","2.9.14+dfsg-1.3ubuntu3.5"],"ecosystem_specific":{"binaries":[{"binary_name":"libxml2","binary_version":"2.9.14+dfsg-1.3ubuntu3.6"},{"binary_name":"libxml2-utils","binary_version":"2.9.14+dfsg-1.3ubuntu3.6"},{"binary_name":"python3-libxml2","binary_version":"2.9.14+dfsg-1.3ubuntu3.6"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-7425.json"}},{"package":{"name":"libxslt","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libxslt?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.35-1","1.1.39-0exp1","1.1.39-0exp1build1","1.1.39-0exp1ubuntu0.24.04.1","1.1.39-0exp1ubuntu0.24.04.2","1.1.39-0exp1ubuntu0.24.04.3"],"ecosystem_specific":{"binaries":[{"binary_name":"libxslt1.1","binary_version":"1.1.39-0exp1ubuntu0.24.04.3"},{"binary_name":"xsltproc","binary_version":"1.1.39-0exp1ubuntu0.24.04.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-7425.json"}},{"package":{"name":"libxslt","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/libxslt?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.39-0exp1ubuntu4","1.1.43-0exp1","1.1.43-0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libxslt1.1","binary_version":"1.1.43-0.1"},{"binary_name":"xsltproc","binary_version":"1.1.43-0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-7425.json"}},{"package":{"name":"libxslt","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/libxslt?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.43-0.1","1.1.43-0.3","1.1.45-0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libxslt1.1","binary_version":"1.1.45-0.1"},{"binary_name":"xsltproc","binary_version":"1.1.45-0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-7425.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}