From: Kees Cook <keesc...@chromium.org>
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 <keesc...@chromium.org>
Cc: sta...@kernel.org
---
drivers/hid/hid-steelseries.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/hid/hid-steelseries.c b/drivers/hid/hid-steelseries.c
index d164911..ef42e86 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_report(hdev, HID_OUTPUT_REPORT, 0, 1, 16)) {
+ ret = -ENODEV;
+ goto err_free;
+ }
+
ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
if (ret) {
hid_err(hdev, "hw start failed\n");
--
Jiri Kosina
SUSE Labs
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