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rtnetlink: Mask the rta_type when range checking
[deliverable/linux.git]
/
net
/
core
/
rtnetlink.c
diff --git
a/net/core/rtnetlink.c
b/net/core/rtnetlink.c
index a585d45cc9d9faefbc51fde485971a1336065e58..5fb8d7e472941fede3595a3a4032cfc21fbe849b 100644
(file)
--- 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;
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