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: David Ahern <dsahern@kernel.org> Cc: Roopa Prabhu <roopa@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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