svn commit: r299865 - head/sys/net
Don Lewis
truckman at FreeBSD.org
Sun May 15 21:37:38 UTC 2016
Author: truckman
Date: Sun May 15 21:37:36 2016
New Revision: 299865
URL: https://svnweb.freebsd.org/changeset/base/299865
Log:
When handling SIOCSIFNAME ensure that the new interface name is NUL
terminated. Reject the rename attempt if the name is too long.
MFC after: 1 week
Modified:
head/sys/net/if.c
Modified: head/sys/net/if.c
==============================================================================
--- head/sys/net/if.c Sun May 15 20:04:43 2016 (r299864)
+++ head/sys/net/if.c Sun May 15 21:37:36 2016 (r299865)
@@ -2375,6 +2375,11 @@ ifhwioctl(u_long cmd, struct ifnet *ifp,
return (error);
if (new_name[0] == '\0')
return (EINVAL);
+ if (new_name[IFNAMSIZ-1] != '\0') {
+ new_name[IFNAMSIZ-1] = '\0';
+ if (strlen(new_name) == IFNAMSIZ-1)
+ return (EINVAL);
+ }
if (ifunit(new_name) != NULL)
return (EEXIST);
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