From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Kees Cook , Mika Westerberg , Jiri Kosina Subject: [ 075/117] HID: sensor-hub: validate feature report details Date: Tue, 24 Sep 2013 17:19:01 -0700 Message-Id: <20130925001749.143419456@linuxfoundation.org> In-Reply-To: <20130925001740.833541979@linuxfoundation.org> References: <20130925001740.833541979@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.11-stable review patch. If anyone has any objections, please let me know. ------------------ From: Kees Cook commit 9e8910257397372633e74b333ef891f20c800ee4 upstream. A HID device could send a malicious feature report that would cause the sensor-hub HID driver to read past the end of heap allocation, leaking kernel memory contents to the caller. CVE-2013-2898 Signed-off-by: Kees Cook Reviewed-by: Mika Westerberg Signed-off-by: Jiri Kosina Signed-off-by: Greg Kroah-Hartman --- drivers/hid/hid-sensor-hub.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/hid/hid-sensor-hub.c +++ b/drivers/hid/hid-sensor-hub.c @@ -221,7 +221,8 @@ int sensor_hub_get_feature(struct hid_se mutex_lock(&data->mutex); report = sensor_hub_report(report_id, hsdev->hdev, HID_FEATURE_REPORT); - if (!report || (field_index >= report->maxfield)) { + if (!report || (field_index >= report->maxfield) || + report->field[field_index]->report_count < 1) { ret = -EINVAL; goto done_proc; }