{"id":"ALSA-2025:10630","summary":"Important: libxml2 security update","details":"The libxml2 library is a development toolbox providing the implementation of various XML standards.  \n\nSecurity Fix(es):  \n\n  * libxml: Heap use after free (UAF) leads to Denial of service (DoS) (CVE-2025-49794)\n  * libxml: Null pointer dereference leads to Denial of service (DoS) (CVE-2025-49795)\n  * libxml: Type confusion leads to Denial of service (DoS) (CVE-2025-49796)\n  * libxml2: Integer Overflow in xmlBuildQName() Leads to Stack Buffer Overflow in libxml2 (CVE-2025-6021)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","modified":"2026-01-30T02:25:24.961566Z","published":"2025-07-08T00:00:00Z","related":["CVE-2025-49794","CVE-2025-49795","CVE-2025-49796","CVE-2025-6021"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:10630"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2025-49794"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2025-49795"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2025-49796"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2025-6021"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2372373"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2372379"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2372385"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2372406"},{"type":"ADVISORY","url":"https://errata.almalinux.org/10/ALSA-2025-10630.html"}],"affected":[{"package":{"name":"libxml2","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/libxml2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.12.5-7.el10_0"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2025:10630.json"}},{"package":{"name":"libxml2-devel","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/libxml2-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.12.5-7.el10_0"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2025:10630.json"}},{"package":{"name":"libxml2-static","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/libxml2-static"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.12.5-7.el10_0"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2025:10630.json"}},{"package":{"name":"python3-libxml2","ecosystem":"AlmaLinux:10","purl":"pkg:rpm/almalinux/python3-libxml2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.12.5-7.el10_0"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux10/ALSA-2025:10630.json"}}],"schema_version":"1.7.3"}