HID: steelseries: validate output report details

A HID device could send a malicious output report that would cause the
steelseries HID driver to write beyond the output report allocation
during initialization, causing a heap overflow:

[  167.981534] usb 1-1: New USB device found, idVendor=1038, idProduct=1410
...
[  182.050547] BUG kmalloc-256 (Tainted: G        W   ): Redzone overwritten

CVE-2013-2891

Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-steelseries.c b/drivers/hid/hid-steelseries.c
index d164911..29f328f 100644 (file)
--- a/drivers/hid/hid-steelseries.c
+++ b/drivers/hid/hid-steelseries.c
@@ -249,6 +249,11 @@ static int steelseries_srws1_probe(struct hid_device *hdev,
                goto err_free;
        }
 
+       if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, 0, 0, 16)) {
+               ret = -ENODEV;
+               goto err_free;
+       }
+
        ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
        if (ret) {
                hid_err(hdev, "hw start failed\n");