diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index a63dc9039aead42be2054f76d10c507a8046c9c6..45b64637aa9bc16081f8095f46869644cfd856a4 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -3178,6 +3178,8 @@ packet_setsockopt(struct socket *sock, int level, int optname, char __user *optv return -EBUSY; if (copy_from_user(&val, optval, sizeof(val))) return -EFAULT; + if (val > INT_MAX) + return -EINVAL; po->tp_reserve = val; return 0; }