{"id":"CLSA-2026-1789567256","summary":"Fix CVE(s): CVE-2026-86138, CVE-2026-86140, CVE-2026-86143, CVE-2026-86144","details":"   * SECURITY UPDATE: integer overflow leading to heap buffer overflow in\n     xmlDictAddQString()\n     - debian/patches/CVE-2026-86138.patch: add SIZE_MAX-based overflow guards to\n       the pool size computation in xmlDictAddQString() in dict.c, plus a\n       SIZE_MAX fallback define, so an oversized prefix and name can no longer\n       wrap the allocation size and let the following memcpy() write past the\n       dictionary string pool\n     - CVE-2026-86138","modified":"2026-10-26T09:31:40.193523840Z","published":"2026-09-18T08:11:24Z","upstream":["CVE-2026-86138","CVE-2026-86140","CVE-2026-86143","CVE-2026-86144"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/ubuntu20.04els/CLSA-2026-1789567256.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-2026-86143"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86144"}],"affected":[{"package":{"name":"libxml2","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/libxml2?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.10+dfsg-5ubuntu0.20.04.10+tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1789567256.json"}},{"package":{"name":"libxml2-dev","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/libxml2-dev?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.10+dfsg-5ubuntu0.20.04.10+tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1789567256.json"}},{"package":{"name":"libxml2-doc","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/libxml2-doc?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.10+dfsg-5ubuntu0.20.04.10+tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1789567256.json"}},{"package":{"name":"libxml2-utils","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/libxml2-utils?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.10+dfsg-5ubuntu0.20.04.10+tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1789567256.json"}},{"package":{"name":"python-libxml2","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/python-libxml2?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.10+dfsg-5ubuntu0.20.04.10+tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1789567256.json"}},{"package":{"name":"python3-libxml2","ecosystem":"TuxCare:Ubuntu:20.04","purl":"pkg:deb/tuxcare/python3-libxml2?distro=ubuntu-20.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.10+dfsg-5ubuntu0.20.04.10+tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1789567256.json"}}],"schema_version":"1.9.0"}