CVE-2025-21997 xsk: fix an integer overflow in xp_create_and_assign_umem()

In the Linux kernel, the following vulnerability has been resolved: xsk: fix an integer overflow in xpcreateandassignumem Since the i and pool-chunksize variables are of type 'u32', their product can wrap around and then be cast to 'u64'. This can lead to two different XDP buffers pointing to the...