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-rw-r--r--drivers/usb/misc/ldusb.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c
index 66ec88354b9..ad17892aac9 100644
--- a/drivers/usb/misc/ldusb.c
+++ b/drivers/usb/misc/ldusb.c
@@ -23,6 +23,7 @@
*
* V0.1 (mh) Initial version
* V0.11 (mh) Added raw support for HID 1.0 devices (no interrupt out endpoint)
+ * V0.12 (mh) Added kmalloc check for string buffer
*/
#include <linux/config.h>
@@ -84,7 +85,7 @@ static struct usb_device_id ld_usb_table [] = {
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, ld_usb_table);
-MODULE_VERSION("V0.11");
+MODULE_VERSION("V0.12");
MODULE_AUTHOR("Michael Hund <mhund@ld-didactic.de>");
MODULE_DESCRIPTION("LD USB Driver");
MODULE_LICENSE("GPL");
@@ -635,6 +636,10 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id *
(le16_to_cpu(udev->descriptor.idProduct) == USB_DEVICE_ID_COM3LAB)) &&
(le16_to_cpu(udev->descriptor.bcdDevice) <= 0x103)) {
buffer = kmalloc(256, GFP_KERNEL);
+ if (buffer == NULL) {
+ dev_err(&intf->dev, "Couldn't allocate string buffer\n");
+ goto error;
+ }
/* usb_string makes SETUP+STALL to leave always ControlReadLoop */
usb_string(udev, 255, buffer, 256);
kfree(buffer);