linux-kernel - [PATCH 3.12 083/175] net: reject creation of netdev names with colons

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Message-Id: <eb83542b81fa8bdbc20a0e69edafedce19aeaaf5.1426581621.git.jslaby@suse.cz>
Date:	Tue, 17 Mar 2015 09:41:01 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Matthew Thode <mthode@...ode.org>,
	"David S. Miller" <davem@...emloft.net>,
	Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 083/175] net: reject creation of netdev names with colons

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

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

===============

[ 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: Jiri Slaby <jslaby@...e.cz>
---
 net/core/dev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index 249ab7d67254..3ca487e14080 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -935,7 +935,7 @@ bool dev_valid_name(const char *name)
 		return false;
 
 	while (*name) {
-		if (*name == '/' || isspace(*name))
+		if (*name == '/' || *name == ':' || isspace(*name))
 			return false;
 		name++;
 	}
-- 
2.3.0

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