Description: blkif responses leak backend stack data
References:
 https://xenbits.xen.org/xsa/advisory-216.html
Notes:
Bugs:
upstream: released (4.12-rc7) [089bc0143f489bd3a4578bdff5f4ca68fb26f341]
4.9-upstream-stable: released (4.9.35) [4ae2cb91a6365a6472fad7f04785cc0420ea5ada]
3.16-upstream-stable: released (3.16.46) [d2cc7a18d6342a7025afd16aac6753ad02d788e5]
3.2-upstream-stable: released (3.2.91) [cc21fe1ff77acfab555df5577ea46fc89932f3b2]
sid: released (4.11.11-1)
4.9-stretch-security: released (4.9.30-2+deb9u3) [bugfix/all/xen-blkback-don-t-leak-stack-data-via-response-ring.patch]
3.16-jessie-security: released (3.16.43-2+deb8u3) [bugfix/all/xen-blkback-don-t-leak-stack-data-via-response-ring.patch]
3.2-wheezy-security: released (3.2.93-1)