| From | Greg Kroah-Hartman <> | Subject | [ 075/117] HID: sensor-hub: validate feature report details | Date | Tue, 24 Sep 2013 17:19:01 -0700 |
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3.11-stable review patch. If anyone has any objections, please let me know.
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From: Kees Cook <keescook@chromium.org>
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 <keescook@chromium.org> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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; }
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