Add patches for many Linux CVEs, and overhaul script paths

Patches/Linux_CVEs/CVE-2015-8962/0.patch

@@ -0,0 +1,67 @@
+From f3951a3709ff50990bf3e188c27d346792103432 Mon Sep 17 00:00:00 2001
+From: Calvin Owens <calvinowens@fb.com>
+Date: Fri, 30 Oct 2015 16:57:00 -0700
+Subject: [PATCH] sg: Fix double-free when drives detach during SG_IO
+
+In sg_common_write(), we free the block request and return -ENODEV if
+the device is detached in the middle of the SG_IO ioctl().
+
+Unfortunately, sg_finish_rem_req() also tries to free srp->rq, so we
+end up freeing rq->cmd in the already free rq object, and then free
+the object itself out from under the current user.
+
+This ends up corrupting random memory via the list_head on the rq
+object. The most common crash trace I saw is this:
+
+  ------------[ cut here ]------------
+  kernel BUG at block/blk-core.c:1420!
+  Call Trace:
+  [<ffffffff81281eab>] blk_put_request+0x5b/0x80
+  [<ffffffffa0069e5b>] sg_finish_rem_req+0x6b/0x120 [sg]
+  [<ffffffffa006bcb9>] sg_common_write.isra.14+0x459/0x5a0 [sg]
+  [<ffffffff8125b328>] ? selinux_file_alloc_security+0x48/0x70
+  [<ffffffffa006bf95>] sg_new_write.isra.17+0x195/0x2d0 [sg]
+  [<ffffffffa006cef4>] sg_ioctl+0x644/0xdb0 [sg]
+  [<ffffffff81170f80>] do_vfs_ioctl+0x90/0x520
+  [<ffffffff81258967>] ? file_has_perm+0x97/0xb0
+  [<ffffffff811714a1>] SyS_ioctl+0x91/0xb0
+  [<ffffffff81602afb>] tracesys+0xdd/0xe2
+    RIP [<ffffffff81281e04>] __blk_put_request+0x154/0x1a0
+
+The solution is straightforward: just set srp->rq to NULL in the
+failure branch so that sg_finish_rem_req() doesn't attempt to re-free
+it.
+
+Additionally, since sg_rq_end_io() will never be called on the object
+when this happens, we need to free memory backing ->cmd if it isn't
+embedded in the object itself.
+
+KASAN was extremely helpful in finding the root cause of this bug.
+
+Signed-off-by: Calvin Owens <calvinowens@fb.com>
+Acked-by: Douglas Gilbert <dgilbert@interlog.com>
+Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
+---
+ drivers/scsi/sg.c | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
+index 9d7b7db75e4b9..503ab8b46c0b4 100644
+--- a/drivers/scsi/sg.c
++++ b/drivers/scsi/sg.c
+@@ -787,8 +787,14 @@ sg_common_write(Sg_fd * sfp, Sg_request * srp,
+ 		return k;	/* probably out of space --> ENOMEM */
+ 	}
+ 	if (atomic_read(&sdp->detaching)) {
+-		if (srp->bio)
++		if (srp->bio) {
++			if (srp->rq->cmd != srp->rq->__cmd)
++				kfree(srp->rq->cmd);
++
+ 			blk_end_request_all(srp->rq, -EIO);
++			srp->rq = NULL;
++		}
++
+ 		sg_finish_rem_req(srp);
+ 		return -ENODEV;
+ 	}