From 3bac7ed844bb2701740ed2bdfd37c69385a42f7c Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 22 Apr 2018 18:29:23 -0700 Subject: ipv6: add RTA_TABLE and RTA_PREFSRC to rtm_ipv6_policy commit aa8f8778493c85fff480cdf8b349b1e1dcb5f243 upstream. KMSAN reported use of uninit-value that I tracked to lack of proper size check on RTA_TABLE attribute. I also believe RTA_PREFSRC lacks a similar check. Fixes: 86872cb57925 ("[IPv6] route: FIB6 configuration using struct fib6_config") Fixes: c3968a857a6b ("ipv6: RTA_PREFSRC support for ipv6 route source address selection") Change-Id: Ie870ede087a9209ff20b9dd31da0e2da8e9be101 Signed-off-by: Eric Dumazet Reported-by: syzbot Acked-by: David Ahern Signed-off-by: David S. Miller [bwh: Backported to 3.16: adjust context] Signed-off-by: Ben Hutchings --- net/ipv6/route.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'net') diff --git a/net/ipv6/route.c b/net/ipv6/route.c index b91765728..300d4a712 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -2247,12 +2247,14 @@ void rt6_mtu_change(struct net_device *dev, unsigned int mtu) static const struct nla_policy rtm_ipv6_policy[RTA_MAX+1] = { [RTA_GATEWAY] = { .len = sizeof(struct in6_addr) }, + [RTA_PREFSRC] = { .len = sizeof(struct in6_addr) }, [RTA_OIF] = { .type = NLA_U32 }, [RTA_IIF] = { .type = NLA_U32 }, [RTA_PRIORITY] = { .type = NLA_U32 }, [RTA_METRICS] = { .type = NLA_NESTED }, [RTA_MULTIPATH] = { .len = sizeof(struct rtnexthop) }, [RTA_UID] = { .type = NLA_U32 }, + [RTA_TABLE] = { .type = NLA_U32 }, }; static int rtm_to_fib6_config(struct sk_buff *skb, struct nlmsghdr *nlh, -- cgit v1.2.3