This is a note to let you know that I've just added the patch titled HID: elo: fix memory leak in elo_probe to the 5.16-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-elo-fix-memory-leak-in-elo_probe.patch and it can be found in the queue-5.16 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 659ef7c6a717ac0af3e19ede49282c821b90ffa3 Author: Dongliang Mu <mudongliangabcd@xxxxxxxxx> Date: Sat Jan 22 17:48:26 2022 +0800 HID: elo: fix memory leak in elo_probe [ Upstream commit 817b8b9c5396d2b2d92311b46719aad5d3339dbe ] When hid_parse() in elo_probe() fails, it forgets to call usb_put_dev to decrease the refcount. Fix this by adding usb_put_dev() in the error handling code of elo_probe(). Fixes: fbf42729d0e9 ("HID: elo: update the reference count of the usb device structure") Reported-by: syzkaller <syzkaller@xxxxxxxxxxxxxxxx> Signed-off-by: Dongliang Mu <mudongliangabcd@xxxxxxxxx> Signed-off-by: Jiri Kosina <jkosina@xxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/hid/hid-elo.c b/drivers/hid/hid-elo.c index 8e960d7b233b3..9b42b0cdeef06 100644 --- a/drivers/hid/hid-elo.c +++ b/drivers/hid/hid-elo.c @@ -262,6 +262,7 @@ static int elo_probe(struct hid_device *hdev, const struct hid_device_id *id) return 0; err_free: + usb_put_dev(udev); kfree(priv); return ret; }