From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Wei Yongjun , "David S. Miller" Subject: [ 28/30] netrom: fix invalid use of sizeof in nr_recvmsg() Date: Mon, 29 Apr 2013 12:02:52 -0700 Message-Id: <20130429184358.467908038@linuxfoundation.org> In-Reply-To: <20130429184355.299556377@linuxfoundation.org> References: <20130429184355.299556377@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Wei Yongjun [ Upstream commit c802d759623acbd6e1ee9fbdabae89159a513913 ] sizeof() when applied to a pointer typed expression gives the size of the pointer, not that of the pointed data. Introduced by commit 3ce5ef(netrom: fix info leak via msg_name in nr_recvmsg) Signed-off-by: Wei Yongjun Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/netrom/af_netrom.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/netrom/af_netrom.c +++ b/net/netrom/af_netrom.c @@ -1178,7 +1178,7 @@ static int nr_recvmsg(struct kiocb *iocb } if (sax != NULL) { - memset(sax, 0, sizeof(sax)); + memset(sax, 0, sizeof(*sax)); sax->sax25_family = AF_NETROM; skb_copy_from_linear_data_offset(skb, 7, sax->sax25_call.ax25_call, AX25_ADDR_LEN);