{"id":"CLSA-2026-1789632227","summary":"libxml2: Fix of 5 CVEs","details":"- CVE-2026-86138: add overflow checks to xmlDictAddQString to prevent an integer overflow and heap buffer overflow\n- CVE-2026-86140: bound the writes in xmlSnprintfElements to prevent a stack buffer overflow\n- CVE-2026-86142: make xmlStrlen saturate above INT_MAX and reject the saturated\n  length in xmlXPtrEvalXPtrPart to prevent a heap buffer overflow\n- CVE-2026-86143: reject buffer lengths at or above INT_MAX before calling the output write callback to prevent an integer overflow\n- CVE-2026-86144: propagate parseFlags in xmlXIncludeProcess and xmlXIncludeProcessTree so parser flags such as XML_PARSE_NONET are honoured","modified":"2026-10-26T09:31:55.004093888Z","published":"2026-09-21T23:44:28Z","upstream":["CVE-2026-86138","CVE-2026-86140","CVE-2026-86142","CVE-2026-86143","CVE-2026-86144"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/oraclelinux6els/CLSA-2026-1789632227.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86138"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86140"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86142"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86143"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86144"}],"affected":[{"package":{"name":"libxml2","ecosystem":"TuxCare:OracleLinux:6","purl":"pkg:rpm/tuxcare/libxml2?distro=oraclelinux-6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.6-21.0.1.el6_8.1.tuxcare.ol.els18"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2026-1789632227.json"}},{"package":{"name":"libxml2-devel","ecosystem":"TuxCare:OracleLinux:6","purl":"pkg:rpm/tuxcare/libxml2-devel?distro=oraclelinux-6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.6-21.0.1.el6_8.1.tuxcare.ol.els18"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2026-1789632227.json"}},{"package":{"name":"libxml2-python","ecosystem":"TuxCare:OracleLinux:6","purl":"pkg:rpm/tuxcare/libxml2-python?distro=oraclelinux-6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.6-21.0.1.el6_8.1.tuxcare.ol.els18"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2026-1789632227.json"}},{"package":{"name":"libxml2-static","ecosystem":"TuxCare:OracleLinux:6","purl":"pkg:rpm/tuxcare/libxml2-static?distro=oraclelinux-6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.6-21.0.1.el6_8.1.tuxcare.ol.els18"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2026-1789632227.json"}}],"schema_version":"1.9.0"}