This is a note to let you know that I've just added the patch titled HID: hid-thrustmaster: fix OOB read in thrustmaster_interrupts to the 5.15-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: hid-hid-thrustmaster-fix-oob-read-in-thrustmaster_in.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 6bf9e0acbff12733634c169e941509f4feef3718 Author: Pavel Skripkin <paskripkin@xxxxxxxxx> Date: Sun Feb 20 19:01:14 2022 +0300 HID: hid-thrustmaster: fix OOB read in thrustmaster_interrupts [ Upstream commit fc3ef2e3297b3c0e2006b5d7b3d66965e3392036 ] Syzbot reported an slab-out-of-bounds Read in thrustmaster_probe() bug. The root case is in missing validation check of actual number of endpoints. Code should not blindly access usb_host_interface::endpoint array, since it may contain less endpoints than code expects. Fix it by adding missing validaion check and print an error if number of endpoints do not match expected number Fixes: c49c33637802 ("HID: support for initialization of some Thrustmaster wheels") Reported-and-tested-by: syzbot+35eebd505e97d315d01c@xxxxxxxxxxxxxxxxxxxxxxxxx Signed-off-by: Pavel Skripkin <paskripkin@xxxxxxxxx> Signed-off-by: Jiri Kosina <jkosina@xxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/hid/hid-thrustmaster.c b/drivers/hid/hid-thrustmaster.c index 0c92b7f9b8b8..afdd778a10f0 100644 --- a/drivers/hid/hid-thrustmaster.c +++ b/drivers/hid/hid-thrustmaster.c @@ -158,6 +158,12 @@ static void thrustmaster_interrupts(struct hid_device *hdev) return; } + if (usbif->cur_altsetting->desc.bNumEndpoints < 2) { + kfree(send_buf); + hid_err(hdev, "Wrong number of endpoints?\n"); + return; + } + ep = &usbif->cur_altsetting->endpoint[1]; b_ep = ep->desc.bEndpointAddress;