diff options
| author | David Ahern <dsahern@kernel.org> | 2021-12-30 17:36:34 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-12-31 14:31:59 +0000 |
| commit | 1ff15a710a862db1101b97810af14aedc835a86a (patch) | |
| tree | 0b83c828bf92fc91d7f3ed852823d6eb050c24b2 | |
| parent | 4619bcf91399f00a40885100fb61d594d8454033 (diff) | |
ipv6: Check attribute length for RTA_GATEWAY when deleting multipath route
Make sure RTA_GATEWAY for IPv6 multipath route has enough bytes to hold
an IPv6 address.
Fixes: 6b9ea5a64ed5 ("ipv6: fix multipath route replace error recovery")
Signed-off-by: David Ahern <dsahern@kernel.org>
Cc: Roopa Prabhu <roopa@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv6/route.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c index d16599c225b8..b311c0bc9983 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -5453,7 +5453,11 @@ static int ip6_route_multipath_del(struct fib6_config *cfg, nla = nla_find(attrs, attrlen, RTA_GATEWAY); if (nla) { - nla_memcpy(&r_cfg.fc_gateway, nla, 16); + err = fib6_gw_from_attr(&r_cfg.fc_gateway, nla, + extack); + if (err) + return err; + r_cfg.fc_flags |= RTF_GATEWAY; } } |