From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E5CB23054C1; Tue, 2 Sep 2025 13:43:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756820586; cv=none; b=Us7N3FYxwEWTkpugdHuaDt2Y5U0YCSqHg/nQGv/Jk8M5IjuGQ6fYlX33lLUgPceNsYwEwH/OjZupt31YubvBNOvZi59eI+bx4cXyior2ClaouuGgyJXNXXjlJTRUcDhGxLVh8Key2od+XVZp4sXCK1Guri/j9Hxu4iIczmtktXI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756820586; c=relaxed/simple; bh=INQzRf1rEJTipSZj2ltvUTDNP3C9KzdV8N2yxqvQutA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=okZ7bN2v30J6PP3oenccB3Qjtm6/iZXq+qm6ps46O6reSM1hXiZrbGvKSQHK34rgkNSH5eafM8HyFLp7khKyyf/F1OCVLojDlTwKAWDwdmipY65MJCPuIHfatbl3ORQ3dZVSFc/bT7sjbxomEhAPrw/EIKx3Cxp4wIIFetF96FY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=K803v51n; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="K803v51n" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5CB2CC4CEF5; Tue, 2 Sep 2025 13:43:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756820585; bh=INQzRf1rEJTipSZj2ltvUTDNP3C9KzdV8N2yxqvQutA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=K803v51nvAk1U7ck3rf1EmzdbhRpsOkTMqDWiHIek0RboSPk/LJFi5o/0kjoLHITo VfJnmtEwufInEaNoF5fmVMinB0pxwpcmx54VnTvtNFIPDVzpkfupiTXuLxks1uA7hA S0TAb+ByaiCDDvsO3hrNDl2OM5/8Zb0eoTz8DONs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Minjong Kim , Benjamin Tissoires Subject: [PATCH 5.15 25/33] HID: hid-ntrig: fix unable to handle page fault in ntrig_report_version() Date: Tue, 2 Sep 2025 15:21:43 +0200 Message-ID: <20250902131928.042933168@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250902131927.045875971@linuxfoundation.org> References: <20250902131927.045875971@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Minjong Kim 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 Link: https://patch.msgid.link/20250813-hid-ntrig-page-fault-fix-v2-1-f98581f35106@samsung.com Signed-off-by: Benjamin Tissoires Signed-off-by: Greg Kroah-Hartman --- 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;