HID: zeroplus: validate output report details
authorKees Cook <keescook@chromium.org>
Wed, 11 Sep 2013 19:56:51 +0000 (21:56 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 1 Oct 2013 16:17:46 +0000 (09:17 -0700)
commitbe3cdbf50f4f72325d145318d6ce02acad478925
tree4a31009de8adf108d20fcfb52025c5999f684969
parent2ec96f1b2beb4f755a61ee961ae2dbd7ad922a35
HID: zeroplus: validate output report details

commit 78214e81a1bf43740ce89bb5efda78eac2f8ef83 upstream.

The zeroplus HID driver was not checking the size of allocated values
in fields it used. A HID device could send a malicious output report
that would cause the driver to write beyond the output report allocation
during initialization, causing a heap overflow:

[ 1442.728680] usb 1-1: New USB device found, idVendor=0c12, idProduct=0005
...
[ 1466.243173] BUG kmalloc-192 (Tainted: G        W   ): Redzone overwritten

CVE-2013-2889

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/hid/hid-zpff.c