Commit 1ff15a71 authored by David Ahern's avatar David Ahern Committed by David S. Miller

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: 6b9ea5a6 ("ipv6: fix multipath route replace error recovery")
Signed-off-by: default avatarDavid Ahern <dsahern@kernel.org>
Cc: Roopa Prabhu <roopa@nvidia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4619bcf9
......@@ -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;
}
}
......
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