netfilter: x_tables: Use unsafe_memcpy() for 0-sized destination

The struct xt_entry_target fake flexible array has not be converted to a
true flexible array, which is mainly blocked by it being both UAPI and
used in the middle of other structures. In order to properly check for
0-sized destinations in memcpy(), an exception must be made for the one
place where it is still a destination. Since memcpy() was already
skipping checks for 0-sized destinations, using unsafe_memcpy() is no
change in behavior.

Signed-off-by: Kees Cook <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Signed-off-by: Florian Westphal <[email protected]>

0 files changed, 0 insertions, 0 deletions