Date: Sun, 15 May 2016 21:37:36 +0000 (UTC) From: Don Lewis <truckman@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r299865 - head/sys/net Message-ID: <201605152137.u4FLbaNF096547@repo.freebsd.org>
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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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