{"id":"CVE-2025-49794","summary":"Libxml: heap use after free (uaf) leads to denial of service (dos)","details":"A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath elements under certain circumstances when the XML schematron has the \u003csch:name path=\"...\"/\u003e schema elements. This flaw allows a malicious actor to craft a malicious XML document used as input for libxml, resulting in the program's crash using libxml or other possible undefined behaviors.","modified":"2026-09-12T03:31:04.153611220Z","published":"2025-06-16T15:24:31.020Z","related":["ALSA-2025:10630","ALSA-2025:10698","ALSA-2025:10699","SUSE-SU-2025:02260-1","SUSE-SU-2025:02275-1","SUSE-SU-2025:02294-1","SUSE-SU-2025:02314-1","SUSE-SU-2025:02355-1","SUSE-SU-2025:20564-1","SUSE-SU-2025:20607-1","openSUSE-SU-2025:15321-1"],"database_specific":{"cna_assigner":"redhat","cwe_ids":["CWE-825"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/49xxx/CVE-2025-49794.json"},"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"WEB","url":"https://catalog.redhat.com/software/containers/"},{"type":"WEB","url":"https://cert-portal.siemens.com/productcert/html/ssa-253495.html"},{"type":"WEB","url":"https://cert-portal.siemens.com/productcert/html/ssa-577017.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/07/msg00014.html"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:10630"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:10698"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:10699"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:11580"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:12098"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:12099"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:12199"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:12237"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:12239"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:12240"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:12241"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:13335"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:15397"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:15827"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:15828"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:18217"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:18218"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:18219"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:18240"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:19020"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:19041"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:19046"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:19894"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2025:21913"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:0934"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:62549"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:7519"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2025-49794"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/49xxx/CVE-2025-49794.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-49794"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2372373"},{"type":"REPORT","url":"https://gitlab.gnome.org/GNOME/libxml2/-/issues/931"},{"type":"PACKAGE","url":"https://gitlab.gnome.org/GNOME/libxml2/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.gnome.org/gnome/libxml2","events":[{"introduced":"0"},{"fixed":"0bea77c8289324483c0504d36ac730bb03f6a70b"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.15.0"}],"source":"AFFECTED_FIELD"}}],"versions":["v2.14.0","v2.13.0","v2.12.0","v2.11.0","v2.10.0","v2.9.13","v2.9.12","v2.9.11","CVE-2021-3541","v2.9.10","v2.9.10-rc1","v2.9.9","v2.9.9-rc2","v2.9.9-rc1","v2.9.8","v2.9.8-rc1","v2.9.7","v2.9.7-rc1","v2.9.6","v2.9.6-rc1","v2.9.5","v2.9.5-rc2","v2.9.5-rc1","v2.9.4","CVE-2016-3627","CVE-2016-1833","CVE-2016-1835","CVE-2016-1837","CVE-2016-1836","CVE-2016-1839","CVE-2016-1838","CVE-2016-1840","CVE-2016-4449","CVE-2016-4483","CVE-2016-1834","CVE-2016-3705","v2.9.4-rc2","v2.9.4-rc1","CVE-2016-1762","v2.9.3","CVE-2015-8242","CVE-2015-7500","CVE-2015-7499-2","CVE-2015-7499-1","CVE-2015-5312","CVE-2015-7497","CVE-2015-7498","CVE-2015-8035","CVE-2015-7942-2","CVE-2015-7942","CVE-2015-8317","CVE-2015-1819","CVE-2015-7941_2","CVE-2015-7941_1","v2.9.2","CVE-2014-3660","v2.9.2-rc2","v2.9.2-rc1","CVE-2014-0191","v2.9.1","CVE-2013-2877","v2.9.0","v2.9.0-rc2","v2.8.0","v2.8.0-rc2","v2.8.0-rc1","v2.7.8","v2.7.7","v2.7.6","v2.7.5","v2.7.4","LIBXML2.7.3","LIBXML2.7.2","LIBXML2.7.1","LIBXML2.7.0","LIBXML2.6.32","LIBXML2_2_6_28","LIBXML2_2_6_27","LIBXML2_2_6_26","LIBXML2_2_6_24","LIBXML2_2_6_23","LIBXML2_2_6_22","LIBXML2_2_6_21","LIBXML2_2_6_20","LIBXML2_2_6_19","LIBXML2_2_6_18",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