This is a note to let you know that I've just added the patch titled Input: powermate - fix oops with malicious USB descriptors to the 4.5-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: input-powermate-fix-oops-with-malicious-usb-descriptors.patch and it can be found in the queue-4.5 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 9c6ba456711687b794dcf285856fc14e2c76074f Mon Sep 17 00:00:00 2001 From: Josh Boyer <jwboyer@xxxxxxxxxxxxxxxxx> Date: Mon, 14 Mar 2016 09:33:40 -0700 Subject: Input: powermate - fix oops with malicious USB descriptors From: Josh Boyer <jwboyer@xxxxxxxxxxxxxxxxx> commit 9c6ba456711687b794dcf285856fc14e2c76074f upstream. The powermate driver expects at least one valid USB endpoint in its probe function. If given malicious descriptors that specify 0 for the number of endpoints, it will crash. Validate the number of endpoints on the interface before using them. The full report for this issue can be found here: http://seclists.org/bugtraq/2016/Mar/85 Reported-by: Ralf Spenneberg <ralf@xxxxxxxxxxxxxx> Signed-off-by: Josh Boyer <jwboyer@xxxxxxxxxxxxxxxxx> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/input/misc/powermate.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/input/misc/powermate.c +++ b/drivers/input/misc/powermate.c @@ -307,6 +307,9 @@ static int powermate_probe(struct usb_in int error = -ENOMEM; interface = intf->cur_altsetting; + if (interface->desc.bNumEndpoints < 1) + return -EINVAL; + endpoint = &interface->endpoint[0].desc; if (!usb_endpoint_is_int_in(endpoint)) return -EIO; Patches currently in stable-queue which might be from jwboyer@xxxxxxxxxxxxxxxxx are queue-4.5/usb-serial-ftdi_sio-add-support-for-icp-das-i-756xu-devices.patch queue-4.5/input-powermate-fix-oops-with-malicious-usb-descriptors.patch queue-4.5/perf-tools-fix-python-extension-build.patch queue-4.5/usb-iowarrior-fix-oops-with-malicious-usb-descriptors.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html