{"id":"DEBIAN-CVE-2025-11683","details":"YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure  Missing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read  The issue is seen with complex YAML files with a hash of all keys and empty values.  There is no indication that the issue leads to accessing memory outside that allocated to the module.","modified":"2026-09-01T16:06:08.668314799Z","published":"2025-10-16T01:15:32.890Z","upstream":["CVE-2025-11683"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-11683"}],"affected":[{"package":{"name":"libyaml-syck-perl","ecosystem":"Debian:12","purl":"pkg:deb/debian/libyaml-syck-perl?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.34-2+deb12u1"}]}],"versions":["1.34-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-11683.json"}},{"package":{"name":"libyaml-syck-perl","ecosystem":"Debian:13","purl":"pkg:deb/debian/libyaml-syck-perl?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.34-2+deb13u1"}]}],"versions":["1.34-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-11683.json"}},{"package":{"name":"libyaml-syck-perl","ecosystem":"Debian:14","purl":"pkg:deb/debian/libyaml-syck-perl?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.34-4"}]}],"versions":["1.34-2","1.34-3"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-11683.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}