Vim is an improved version of the good old UNIX editor Vi. Heap-use-after-free in memory allocated in the function 'ga_grow_inner' in in the file 'src/alloc.c' at line 748, which is freed in the file 'src/ex_docmd.c' in the function 'do_cmdline' at line 1010 and then used again in 'src/cmdhist.c' at line 759. When using the ':history' command, it's possible that the provided argument overflows the accepted value. Causing an Integer Overflow and potentially later an use-after-free. This vulnerability has been patched in version 9.0.2068