From: Eric Dumazet Date: Mon, 23 Apr 2018 01:29:23 +0000 (-0700) Subject: ipv6: add RTA_TABLE and RTA_PREFSRC to rtm_ipv6_policy X-Git-Tag: v4.9.97~8 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e2956fc8356549c7072a6b420b500bb5fe32c4fb;p=platform%2Fkernel%2Flinux-amlogic.git ipv6: add RTA_TABLE and RTA_PREFSRC to rtm_ipv6_policy [ Upstream commit aa8f8778493c85fff480cdf8b349b1e1dcb5f243 ] 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") Signed-off-by: Eric Dumazet Reported-by: syzbot Acked-by: David Ahern Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- diff --git a/net/ipv6/route.c b/net/ipv6/route.c index d6a4b2c73a7c..f6ac472acd0f 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -2811,6 +2811,7 @@ 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 }, @@ -2820,6 +2821,7 @@ static const struct nla_policy rtm_ipv6_policy[RTA_MAX+1] = { [RTA_ENCAP_TYPE] = { .type = NLA_U16 }, [RTA_ENCAP] = { .type = NLA_NESTED }, [RTA_EXPIRES] = { .type = NLA_U32 }, + [RTA_TABLE] = { .type = NLA_U32 }, }; static int rtm_to_fib6_config(struct sk_buff *skb, struct nlmsghdr *nlh,