A flaw was found in GLib, which is vulnerable to an integer overflow in the g_string_insert_unichar() function. When the position at which to insert the character is large, the position will overflow, leading to a buffer underwrite.Referenceshttps://access.redhat.com/errata/RHSA-2025:10855https://access.redhat.com/errata/RHSA-2025:11140https://access.redhat.com/errata/RHSA-2025:11327https://access.redhat.com/errata/RHSA-2025:11373https://access.redhat.com/errata/RHSA-2025:11374https://access.redhat.com/errata/RHSA-2025:11662https://access.redhat.com/errata/RHSA-2025:12275https://access.redhat.com/security/cve/CVE-2025-4373https://bugzilla.redhat.com/show_bug.cgi?id=2364265https://gitlab.gnome.org/GNOME/glib/-/issues/3677
