From: Alexander Usyskin <alexander.usyskin@intel.com>
Date: Mon, 25 Aug 2014 13:46:53 +0000 (+0300)
Subject: mei: bus: fix possible boundaries violation
X-Git-Tag: v3.10.61~18
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ba8beb4ca84e22996b0f553248ea52c760afb930;p=thirdparty%2Fkernel%2Fstable.git

mei: bus: fix possible boundaries violation

commit cfda2794b5afe7ce64ee9605c64bef0e56a48125 upstream.

function 'strncpy' will fill whole buffer 'id.name' of fixed size (32)
with string value and will not leave place for NULL-terminator.
Possible buffer boundaries violation in following string operations.
Replace strncpy with strlcpy.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index 99cc0b07a7131..0513ea0906dd6 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -71,7 +71,7 @@ static int mei_cl_device_probe(struct device *dev)
 
 	dev_dbg(dev, "Device probe\n");
 
-	strncpy(id.name, dev_name(dev), MEI_CL_NAME_SIZE);
+	strlcpy(id.name, dev_name(dev), sizeof(id.name));
 
 	return driver->probe(device, &id);
 }