linux-kernel - [PATCH] usbip:usbip_common.c: check return value of sscanf

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Message-ID: <20140306235156.GA3498@vega.jjdev.com>
Date:	Thu, 6 Mar 2014 15:51:59 -0800
From:	John de la Garza <john@...ev.com>
To:	linux-kernel@...r.kernel.org
Cc:	linux-usb@...r.kernel.org, devel@...verdev.osuosl.org
Subject: [PATCH] usbip:usbip_common.c: check return value of sscanf

Added code to check return value of sscanf.

Signed-off-by: John de la Garza <john@...ev.com>
---
 drivers/staging/usbip/usbip_common.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/usbip/usbip_common.c b/drivers/staging/usbip/usbip_common.c
index 4a2aab1..2a11233 100644
--- a/drivers/staging/usbip/usbip_common.c
+++ b/drivers/staging/usbip/usbip_common.c
@@ -55,7 +55,8 @@ static ssize_t usbip_debug_store(struct device *dev,
 				 struct device_attribute *attr, const char *buf,
 				 size_t count)
 {
-	sscanf(buf, "%lx", &usbip_debug_flag);
+	if (sscanf(buf, "%lx", &usbip_debug_flag) != 1)
+		return -EINVAL;
 	return count;
 }
 DEVICE_ATTR_RW(usbip_debug);
-- 
1.7.10.4

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