CVE-2021-27219

Se detectó un problema en GNOME GLib versiones anteriores a 2.66.6 y versiones 2.67.x anteriores a 2.67.3. La función g_bytes_new presenta un desbordamiento de enteros en plataformas de 64 bits debido a una conversión implícita de 64 bits a 32 bits. El desbordamiento podría conllevar a una corrupción de la memoria

An integer wraparound was discovered in glib due to passing a 64 bit sized value to function g_memdup() which accepts a 32 bits number as argument. An attacker may abuse this flaw when an application linked against the glib library uses g_bytes_new() function or possibly other functions that use g_memdup() underneath and accept a 64 bits argument as size. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.