]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
ipv6: Fix traffic triggered IPsec connections.
authorSteffen Klassert <steffen.klassert@secunet.com>
Mon, 9 Oct 2017 06:39:43 +0000 (08:39 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 18 Nov 2017 10:30:35 +0000 (11:30 +0100)
commit2e7d97c9d60cf815dca22d4891c6982cd461cb84
tree50376de660944f40768137af290446941e50c88e
parent9dee46063c340b67b8272bf8c1ed21a4fae4afbe
ipv6: Fix traffic triggered IPsec connections.

[ Upstream commit 62cf27e52b8c9a39066172ca6b6134cb5eaa9450 ]

A recent patch removed the dst_free() on the allocated
dst_entry in ipv6_blackhole_route(). The dst_free() marked
the dst_entry as dead and added it to the gc list. I.e. it
was setup for a one time usage. As a result we may now have
a blackhole route cached at a socket on some IPsec scenarios.
This makes the connection unusable.

Fix this by marking the dst_entry directly at allocation time
as 'dead', so it is used only once.

Fixes: 587fea741134 ("ipv6: mark DST_NOGC and remove the operation of dst_free()")
Reported-by: Tobias Brunner <tobias@strongswan.org>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/ipv6/route.c