svn commit: r250055 - head/sys/fs/nfsserver

[Dag-Erling Smørgrav]

Author: des
Date: Mon Apr 29 20:09:44 2013
New Revision: 250055
URL: http://svnweb.freebsd.org/changeset/base/250055

Log:
  Fix a bug that allows NFS clients to issue READDIR on files.
  
  PR:		kern/178016
  Security:	CVE-2013-3266
  Security:	FreeBSD-SA-13:05.nfsserver

Modified:
  head/sys/fs/nfsserver/nfs_nfsdport.c

Modified: head/sys/fs/nfsserver/nfs_nfsdport.c
==============================================================================
--- head/sys/fs/nfsserver/nfs_nfsdport.c	Mon Apr 29 19:30:35 2013	(r250054)
+++ head/sys/fs/nfsserver/nfs_nfsdport.c	Mon Apr 29 20:09:44 2013	(r250055)
@@ -1574,6 +1574,8 @@ nfsrvd_readdir(struct nfsrv_descript *nd
 			nd->nd_repstat = NFSERR_BAD_COOKIE;
 #endif
 	}
+	if (!nd->nd_repstat && vp->v_type != VDIR)
+		nd->nd_repstat = NFSERR_NOTDIR;
 	if (nd->nd_repstat == 0 && cnt == 0) {
 		if (nd->nd_flag & ND_NFSV2)
 			/* NFSv2 does not have NFSERR_TOOSMALL */