You're receiving this bug because the package in Summary has produced _FORTIFY_SOURCE related warnings indicating the presence of a sure overflow in a static buffer.
Even though this is not always an indication of a security problem it might even be. So please check this out ASAP.
By the way, _FORTIFY_SOURCE is disabled when you disable optimisation, so don't try finding out the cause using -O0.
Your friendly neighborhood tinderboxer
Created attachment 252563 [details]
This is a typical case of using a magic constant as the snprintf length argument instead of using sizeof to let the compiler insert the proper length. The offending calls in vlistlib.c can be fixed by doing:
sed -e 's/\(snprintf(\s*\(LI->[a-zA-Z_]\+\),\s*\)[a-zA-Z_]\+,/\1 sizeof(\2),/'