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| author | Vlad Yasevich <vyasevic@redhat.com> | 2013-03-13 04:18:58 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-03-17 11:43:40 -0400 |
| commit | a5b8db91442fce9c9713fcd656c3698f1adde1d6 (patch) | |
| tree | e3e6a4d6315a36ca81a5a431f087579baac6510f /net | |
| parent | 8c6216d7f118a128678270824b6a1286a63863ca (diff) | |
| download | lwn-a5b8db91442fce9c9713fcd656c3698f1adde1d6.tar.gz lwn-a5b8db91442fce9c9713fcd656c3698f1adde1d6.zip | |
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.c | 2 |
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; |