diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 86b3e2f..9c80212 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -3820,6 +3820,8 @@
 		rb->frames_per_block = req->tp_block_size/req->tp_frame_size;
 		if (unlikely(rb->frames_per_block <= 0))
 			goto out;
+		if (unlikely(req->tp_block_size > UINT_MAX / req->tp_block_nr))
+			goto out;
 		if (unlikely((rb->frames_per_block * req->tp_block_nr) !=
 					req->tp_frame_nr))
 			goto out;