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authorPaul Moore <pmoore@redhat.com>2013-12-03 11:16:36 -0500
committerPaul Moore <pmoore@redhat.com>2013-12-04 16:07:28 -0500
commit7f721643db3b2da53e1b91aaa4e8cb7706bfdd10 (patch)
tree2265959ac11a9e6acce19ae68bb4b837af186fb5 /tools/usb
parentda2ea0d05671f878196cc949906aa89d15c567db (diff)
downloadlinux-7f721643db3b2da53e1b91aaa4e8cb7706bfdd10.tar.bz2
selinux: handle TCP SYN-ACK packets correctly in selinux_ip_postroute()
In selinux_ip_postroute() we perform access checks based on the packet's security label. For locally generated traffic we get the packet's security label from the associated socket; this works in all cases except for TCP SYN-ACK packets. In the case of SYN-ACK packet's the correct security label is stored in the connection's request_sock, not the server's socket. Unfortunately, at the point in time when selinux_ip_postroute() is called we can't query the request_sock directly, we need to recreate the label using the same logic that originally labeled the associated request_sock. See the inline comments for more explanation. Reported-by: Janak Desai <Janak.Desai@gtri.gatech.edu> Tested-by: Janak Desai <Janak.Desai@gtri.gatech.edu> Cc: stable@vger.kernel.org Signed-off-by: Paul Moore <pmoore@redhat.com>
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