From: Kees Cook Date: Wed, 11 Sep 2013 19:56:53 +0000 (+0200) Subject: HID: steelseries: validate output report details X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=41df7f6d43723deb7364340b44bc5d94bf717456;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git 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 Cc: stable@vger.kernel.org Reviewed-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- diff --git a/drivers/hid/hid-steelseries.c b/drivers/hid/hid-steelseries.c index d16491192112..29f328f411fb 100644 --- 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");