On Thu, Mar 9, 2017 at 2:12 AM, David Miller <da...@davemloft.net> wrote: > From: Alexander Potapenko <gli...@google.com> > Date: Mon, 6 Mar 2017 19:46:14 +0100 > >> KMSAN (KernelMemorySanitizer, a new error detection tool) reports use of >> uninitialized memory in selinux_socket_bind(): > ... >> (the line numbers are relative to 4.8-rc6, but the bug persists upstream) >> >> , when I run the following program as root: > ... >> (for different values of |size| other error reports are printed). >> >> This happens because bind() unconditionally copies |size| bytes of >> |addr| to the kernel, leaving the rest uninitialized. Then >> security_socket_bind() reads the IP address bytes, including the >> uninitialized ones, to determine the port, or e.g. pass them further to >> sel_netnode_find(), which uses them to calculate a hash. >> >> Signed-off-by: Alexander Potapenko <gli...@google.com> > > Are the SELINUX folks going to pick this up or should I?
Yes, it's on my list of things to merge, I was just a bit distracted this week with yet another audit problem. I'm going to start making my way through the patch backlog today. -- paul moore www.paul-moore.com
