Update redir.c - Fix off-by-one heap buffer overflow in copyloop()#47
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malloc(bufsize) allocates exactly bufsize bytes, but buf[bytes] = 0 can write one byte past the end when read() returns bufsize bytes. Fix by allocating bufsize + 1 to make room for the NUL terminator.
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malloc(bufsize) allocates exactly bufsize bytes, but buf[bytes] = 0 can write one byte past the end when read() returns bufsize bytes. Fix by allocating bufsize + 1 to make room for the NUL terminator.
This heapoverflow leads to DOS.