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authorVlad Yasevich <vyasevic@redhat.com>2013-03-13 04:18:58 +0000
committerDavid S. Miller <davem@davemloft.net>2013-03-17 11:43:40 -0400
commita5b8db91442fce9c9713fcd656c3698f1adde1d6 (patch)
treee3e6a4d6315a36ca81a5a431f087579baac6510f /net
parent8c6216d7f118a128678270824b6a1286a63863ca (diff)
downloadlinux-a5b8db91442fce9c9713fcd656c3698f1adde1d6.tar.bz2
rtnetlink: Mask the rta_type when range checking
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 <vyasevic@redhat.com> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/core/rtnetlink.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index a585d45cc9d9..5fb8d7e47294 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -2621,7 +2621,7 @@ 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;