{"id":"UBUNTU-CVE-2025-6052","details":"A flaw was found in how GLib’s GString manages memory when adding data to strings. If a string is already very large, combining it with more input can cause a hidden overflow in the size calculation. This makes the system think it has enough memory when it doesn’t. As a result, data may be written past the end of the allocated memory, leading to crashes or memory corruption.","modified":"2026-04-22T19:59:06.373928Z","published":"2025-06-13T16:15:00Z","related":["USN-7942-1"],"upstream":["CVE-2025-6052"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-6052"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-6052"},{"type":"REPORT","url":"https://gitlab.gnome.org/GNOME/glib/-/merge_requests/4655"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2025-6052"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7942-1"}],"affected":[{"package":{"name":"glib2.0","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/glib2.0@2.80.0-6ubuntu3.6?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.80.0-6ubuntu3.6"}]}],"versions":["2.78.0-2","2.78.1-4","2.78.3-1","2.78.3-2","2.79.1-1","2.79.2-1~ubuntu1","2.79.3-3ubuntu5","2.80.0-6ubuntu1","2.80.0-6ubuntu3","2.80.0-6ubuntu3.1","2.80.0-6ubuntu3.2","2.80.0-6ubuntu3.4","2.80.0-6ubuntu3.5"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"gir1.2-girepository-3.0","binary_version":"2.80.0-6ubuntu3.6"},{"binary_name":"gir1.2-glib-2.0","binary_version":"2.80.0-6ubuntu3.6"},{"binary_name":"libgirepository-2.0-0","binary_version":"2.80.0-6ubuntu3.6"},{"binary_name":"libglib2.0-0t64","binary_version":"2.80.0-6ubuntu3.6"},{"binary_name":"libglib2.0-bin","binary_version":"2.80.0-6ubuntu3.6"},{"binary_name":"libglib2.0-data","binary_version":"2.80.0-6ubuntu3.6"},{"binary_name":"libglib2.0-dev-bin","binary_version":"2.80.0-6ubuntu3.6"},{"binary_version":"2.80.0-6ubuntu3.6","binary_name":"libglib2.0-tests"}],"priority_reason":"This is a low-severity issue"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-6052.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}