5.4-stable review patch. If anyone has any objections, please let me know.
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From: Minjong Kim minbell.kim@samsung.com
commit 185c926283da67a72df20a63a5046b3b4631b7d9 upstream.
in ntrig_report_version(), hdev parameter passed from hid_probe(). sending descriptor to /dev/uhid can make hdev->dev.parent->parent to null if hdev->dev.parent->parent is null, usb_dev has invalid address(0xffffffffffffff58) that hid_to_usb_dev(hdev) returned when usb_rcvctrlpipe() use usb_dev,it trigger page fault error for address(0xffffffffffffff58)
add null check logic to ntrig_report_version() before calling hid_to_usb_dev()
Signed-off-by: Minjong Kim minbell.kim@samsung.com Link: https://patch.msgid.link/20250813-hid-ntrig-page-fault-fix-v2-1-f98581f35106... Signed-off-by: Benjamin Tissoires bentiss@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/hid/hid-ntrig.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/hid/hid-ntrig.c +++ b/drivers/hid/hid-ntrig.c @@ -144,6 +144,9 @@ static void ntrig_report_version(struct struct usb_device *usb_dev = hid_to_usb_dev(hdev); unsigned char *data = kmalloc(8, GFP_KERNEL);
+ if (!hid_is_usb(hdev)) + return; + if (!data) goto err_free;