unsquash-4.c: harden uid/gid and fragment table reading against corrupted data

Harden uid/gid and fragment table reading, checking against
unexpected metadata block length, ensuring no buffer
overflow/underflow occurs.

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
1 file changed
tree: d9001d02dabf83da1e0204c1408dc20ebd4ac5c4
  1. kernel/
  2. kernel-2.4/
  3. squashfs-tools/
  4. README