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.
Exploitability
AV:NAC:HPR:NUI:NScope
S:UImpact
C:NI:LA:L4.8/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:LOther