linux-kernel - [PATCH 3.19 017/177] net: reject creation of netdev names with colons

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Message-Id: <20150316140813.869596180@linuxfoundation.org>
Date:	Mon, 16 Mar 2015 15:07:04 +0100
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Matthew Thode <mthode@...ode.org>,
	"David S. Miller" <davem@...emloft.net>
Subject: [PATCH 3.19 017/177] net: reject creation of netdev names with colons

3.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Matthew Thode <mthode@...ode.org>

[ Upstream commit a4176a9391868bfa87705bcd2e3b49e9b9dd2996 ]

colons are used as a separator in netdev device lookup in dev_ioctl.c

Specific functions are SIOCGIFTXQLEN SIOCETHTOOL SIOCSIFNAME

Signed-off-by: Matthew Thode <mthode@...ode.org>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/core/dev.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -945,7 +945,7 @@ bool dev_valid_name(const char *name)
 		return false;
 
 	while (*name) {
-		if (*name == '/' || isspace(*name))
+		if (*name == '/' || *name == ':' || isspace(*name))
 			return false;
 		name++;
 	}


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