| From | Greg Kroah-Hartman <> | Subject | [ 17/34] netrom: fix invalid use of sizeof in nr_recvmsg() | Date | Mon, 29 Apr 2013 12:02:24 -0700 |
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3.4-stable review patch. If anyone has any objections, please let me know.
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From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
[ 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 <yongjun_wei@trendmicro.com.cn> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- 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 @@ -1177,7 +1177,7 @@ 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);
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