REDHAT-BUG-2433348: Integer Overflow

Integer Overflow vulnerability in GLib’s Unicode case conversion implementation. The flaw is caused by mixing signed and unsigned integer types when calculating output buffer lengths across outputmarks() and realtolower(). An integer overflow can result in an undersized heap allocation followed by out-of-bounds writes during UTF-8 character conversion. Exploitation requires an application to process attacker-controlled large Unicode input and may result in crashes or potential memory corruption.