Author: truckman
Date: Fri May 20 06:54:59 2016
New Revision: 300278
URL: https://svnweb.freebsd.org/changeset/base/300278
Log:
MFC r299865
When handling SIOCSIFNAME ensure that the new interface name is NUL
terminated. Reject the rename attempt if the name is too long.
Modified:
stable/10/sys/net/if.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/net/if.c
==============================================================================
--- stable/10/sys/net/if.c Fri May 20 06:54:58 2016 (r300277)
+++ stable/10/sys/net/if.c Fri May 20 06:54:59 2016 (r300278)
@@ -2434,6 +2434,11 @@ 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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