From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-Id: <20130411202548.739258128@goodmis.org> Date: Thu, 11 Apr 2013 16:25:18 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Vlad Yasevich , Thomas Graf , "David S. Miller" Subject: [ 015/171 ] rtnetlink: Mask the rta_type when range checking References: <20130411202503.783159048@goodmis.org> Content-Disposition: inline; filename=0015-rtnetlink-Mask-the-rta_type-when-range-checking.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.6.11.2 stable review patch. If anyone has any objections, please let me know. ------------------ From: Vlad Yasevich [ Upstream commit a5b8db91442fce9c9713fcd656c3698f1adde1d6 ] Range/validity checks on rta_type in rtnetlink_rcv_msg() do not account for flags that may be set. This causes the function to return -EINVAL when flags are set on the type (for example NLA_F_NESTED). Signed-off-by: Vlad Yasevich Acked-by: Thomas Graf Signed-off-by: David S. Miller Signed-off-by: Steven Rostedt --- net/core/rtnetlink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 4908588..1c854d4 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -2319,7 +2319,7 @@ static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) struct rtattr *attr = (void *)nlh + NLMSG_ALIGN(min_len); while (RTA_OK(attr, attrlen)) { - unsigned int flavor = attr->rta_type; + unsigned int flavor = attr->rta_type & NLA_TYPE_MASK; if (flavor) { if (flavor > rta_max[sz_idx]) return -EINVAL; -- 1.7.10.4