ipv6: Inhibit IPv4-mapped src address on the wire.
This patch adds a check for the problematic case of an IPv4-mapped IPv6 source address and a destination address that is neither an IPv4-mapped IPv6 address nor in6addr_any, and returns an appropriate error. The check in done before returning from looking up the route. Signed-off-by: Jonathan T. Leighton <jtleight@udel.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
fed06ee89b
commit
ec5e3b0a1d
|
@ -1021,6 +1021,9 @@ static int ip6_dst_lookup_tail(struct net *net, const struct sock *sk,
|
|||
}
|
||||
}
|
||||
#endif
|
||||
if (ipv6_addr_v4mapped(&fl6->saddr) &&
|
||||
!(ipv6_addr_v4mapped(&fl6->daddr) || ipv6_addr_any(&fl6->daddr)))
|
||||
return -EAFNOSUPPORT;
|
||||
|
||||
return 0;
|
||||
|
||||
|
|
Loading…
Reference in a new issue