From: Ulrich Drepper <drepper@redhat.com>
Date: Wed, 20 May 1998 12:11:11 +0000 (+0000)
Subject: Add FreeBSD DoS patch.
X-Git-Tag: cvs/sparc-980522-merge~7
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bb46114429495b9921abe419e69688a50f1929ce;p=thirdparty%2Fglibc.git

Add FreeBSD DoS patch.
---

diff --git a/sunrpc/svc_tcp.c b/sunrpc/svc_tcp.c
index 278e16fc33a..627841fff8a 100644
--- a/sunrpc/svc_tcp.c
+++ b/sunrpc/svc_tcp.c
@@ -378,6 +378,7 @@ svctcp_recv(xprt, msg)
 		cd->x_id = msg->rm_xid;
 		return (TRUE);
 	}
+	cd->strm_stat = XPRT_DIED;      /* XXXX */
 	return (FALSE);
 }
 
diff --git a/sunrpc/xdr_rec.c b/sunrpc/xdr_rec.c
index 6b33208d76a..b7d5388d224 100644
--- a/sunrpc/xdr_rec.c
+++ b/sunrpc/xdr_rec.c
@@ -548,6 +548,12 @@ set_input_fragment(rstrm)
 		return FALSE;
 	header = ntohl(header);
 	rstrm->last_frag = ((header & LAST_FRAG) == 0) ? FALSE : TRUE;
+	/*
+	 * Sanity check. Try not to accept wildly incorrect
+	 * record sizes.
+	 */
+	if ((header & (~LAST_FRAG)) > rstrm->recvsize)
+	  return(FALSE);
 	rstrm->fbtbc = header & ~LAST_FRAG;
 	return TRUE;
 }