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From: Antonio Ospite <ospite@studenti.unina.it>
To: linux-input@vger.kernel.org
Cc: Antonio Ospite <ospite@studenti.unina.it>, Jiri Kosina <jkosina@suse.cz>,
	Alan Ott <alan@signal11.us>, Oliver Neukum <oliver@neukum.name>,
	linux-kernel@vger.kernel.org, stable@kernel.org
Subject: [PATCH 2/2] HID: hidraw,
	fix a NULL pointer dereference in hidraw_write
Date: Tue,  5 Oct 2010 17:20:17 +0200
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diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 9eaf6ae..a3866b5 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -109,6 +109,12 @@ static ssize_t hidraw_write(struct file *file, const char __user *buffer, size_t
 	int ret = 0;
 
 	mutex_lock(&minors_lock);
+
+	if (!hidraw_table[minor]) {
+		ret = -ENODEV;
+		goto out;
+	}
+
 	dev = hidraw_table[minor]->hid;
 
 	if (!dev->hid_output_raw_report) {