1 files changed, 52 insertions, 0 deletions

diff --git a/recipes-kernel/linux/files/0001-HID-CVE-2014-3181.patch b/recipes-kernel/linux/files/0001-HID-CVE-2014-3181.patch
new file mode 100644
index 0000000..4355c68
--- /dev/null
+++ b/recipes-kernel/linux/files/0001-HID-CVE-2014-3181.patch
@@ -0,0 +1,52 @@
+From c54def7bd64d7c0b6993336abcffb8444795bf38 Mon Sep 17 00:00:00 2001
+From: Jiri Kosina <jkosina@suse.cz>
+Date: Wed, 27 Aug 2014 09:12:24 +0200
+Subject: [PATCH] HID: magicmouse: sanity check report size in raw_event()
+ callback
+
+The report passed to us from transport driver could potentially be
+arbitrarily large, therefore we better sanity-check it so that
+magicmouse_emit_touch() gets only valid values of raw_id.
+
+This fixes CVE-2014-3181
+Upstream-Status: Backport
+
+Cc: stable@vger.kernel.org
+Reported-by: Steven Vittitoe <scvitti@google.com>
+Signed-off-by: Jiri Kosina <jkosina@suse.cz>
+Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com>
+---
+ drivers/hid/hid-magicmouse.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c
+index ecc2cbf..29a74c1 100644
+--- a/drivers/hid/hid-magicmouse.c
++++ b/drivers/hid/hid-magicmouse.c
+@@ -290,6 +290,11 @@ static int magicmouse_raw_event(struct hid_device *hdev,
+                if (size < 4 || ((size - 4) % 9) != 0)
+                        return 0;
+                npoints = (size - 4) / 9;
++               if (npoints > 15) {
++                       hid_warn(hdev, "invalid size value (%d) for TRACKPAD_REPORT_ID\n",
++                                       size);
++                       return 0;
++               }
+                msc->ntouches = 0;
+                for (ii = 0; ii < npoints; ii++)
+                        magicmouse_emit_touch(msc, ii, data + ii * 9 + 4);
+@@ -307,6 +312,11 @@ static int magicmouse_raw_event(struct hid_device *hdev,
+                if (size < 6 || ((size - 6) % 8) != 0)
+                        return 0;
+                npoints = (size - 6) / 8;
++               if (npoints > 15) {
++                       hid_warn(hdev, "invalid size value (%d) for MOUSE_REPORT_ID\n",
++                                       size);
++                       return 0;
++               }
+                msc->ntouches = 0;
+                for (ii = 0; ii < npoints; ii++)
+                        magicmouse_emit_touch(msc, ii, data + ii * 8 + 6);
+-- 
+1.9.1
+