CVE-2019-14875: NULL Pointer Dereference

In the multiply function of the newlib libc library, all versions prior to 3.3.0 see newlib/libc/stdlib/mprec.c, Balloc is used to allocate a big integer, however no check is performed to verify if the allocation succeeded or not. The access of x0 will trigger a null pointer dereference bug in ca...