Commit 0b8c350c authored by Willem de Bruijn's avatar Willem de Bruijn Committed by Sasha Levin

ipv6: release dst on error in ip6_dst_lookup_tail

[ Upstream commit 00ea1cee ]

If ip6_dst_lookup_tail has acquired a dst and fails the IPv4-mapped
check, release the dst before returning an error.

Fixes: ec5e3b0a ("ipv6: Inhibit IPv4-mapped src address on the wire.")
Signed-off-by: default avatarWillem de Bruijn <willemb@google.com>
Acked-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent eccc7d3c
...@@ -978,8 +978,10 @@ static int ip6_dst_lookup_tail(struct sock *sk, ...@@ -978,8 +978,10 @@ static int ip6_dst_lookup_tail(struct sock *sk,
} }
#endif #endif
if (ipv6_addr_v4mapped(&fl6->saddr) && if (ipv6_addr_v4mapped(&fl6->saddr) &&
!(ipv6_addr_v4mapped(&fl6->daddr) || ipv6_addr_any(&fl6->daddr))) !(ipv6_addr_v4mapped(&fl6->daddr) || ipv6_addr_any(&fl6->daddr))) {
return -EAFNOSUPPORT; err = -EAFNOSUPPORT;
goto out_err_release;
}
return 0; return 0;
......
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