This is a note to let you know that I've just added the patch titled ipv6: release dst on error in ip6_dst_lookup_tail to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: ipv6-release-dst-on-error-in-ip6_dst_lookup_tail.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 00ea1ceebe0d9f2dc1cc2b7bd575a00100c27869 Mon Sep 17 00:00:00 2001 From: Willem de Bruijn <willemb@xxxxxxxxxx> Date: Sat, 18 Feb 2017 19:00:45 -0500 Subject: ipv6: release dst on error in ip6_dst_lookup_tail From: Willem de Bruijn <willemb@xxxxxxxxxx> commit 00ea1ceebe0d9f2dc1cc2b7bd575a00100c27869 upstream. If ip6_dst_lookup_tail has acquired a dst and fails the IPv4-mapped check, release the dst before returning an error. Fixes: ec5e3b0a1d41 ("ipv6: Inhibit IPv4-mapped src address on the wire.") Signed-off-by: Willem de Bruijn <willemb@xxxxxxxxxx> Acked-by: Eric Dumazet <edumazet@xxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Cc: Ben Hutchings <ben.hutchings@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/ipv6/ip6_output.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -1005,8 +1005,10 @@ static int ip6_dst_lookup_tail(struct ne } #endif if (ipv6_addr_v4mapped(&fl6->saddr) && - !(ipv6_addr_v4mapped(&fl6->daddr) || ipv6_addr_any(&fl6->daddr))) - return -EAFNOSUPPORT; + !(ipv6_addr_v4mapped(&fl6->daddr) || ipv6_addr_any(&fl6->daddr))) { + err = -EAFNOSUPPORT; + goto out_err_release; + } return 0; Patches currently in stable-queue which might be from willemb@xxxxxxxxxx are queue-4.4/ipv6-release-dst-on-error-in-ip6_dst_lookup_tail.patch