https://www.isc.org/software/bind/advisories/cve-2011-4313

bind-9.8.1-P1.patch

diff -Nru bind-9.8.1/CHANGES bind-9.8.1-P1/CHANGES
--- bind-9.8.1/CHANGES	2011-08-24 12:17:30.000000000 +0900
+++ bind-9.8.1-P1/CHANGES	2011-11-16 18:34:40.000000000 +0900
@@ -1,3 +1,9 @@
+	--- 9.8.1-P1 released ---
+
+3218.	[security]	Cache lookup could return RRSIG data associated with
+			nonexistent records, leading to an assertion
+			failure. [RT #26590]
+
 	--- 9.8.1 released ---
 
 	--- 9.8.1rc1 released ---
diff -Nru bind-9.8.1/bin/named/query.c bind-9.8.1-P1/bin/named/query.c
--- bind-9.8.1/bin/named/query.c	2011-06-09 12:14:03.000000000 +0900
+++ bind-9.8.1-P1/bin/named/query.c	2011-11-16 18:32:08.000000000 +0900
@@ -15,7 +15,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: query.c,v 1.353.8.11 2011-06-09 03:14:03 marka Exp $ */
+/* $Id: query.c,v 1.353.8.11.4.1 2011-11-16 09:32:08 marka Exp $ */
 
 /*! \file */
 
@@ -1393,11 +1393,9 @@
 			goto addname;
 		if (result == DNS_R_NCACHENXRRSET) {
 			dns_rdataset_disassociate(rdataset);
-			/*
-			 * Negative cache entries don't have sigrdatasets.
-			 */
-			INSIST(sigrdataset == NULL ||
-			       ! dns_rdataset_isassociated(sigrdataset));
+			if (sigrdataset != NULL &&
+			    dns_rdataset_isassociated(sigrdataset))
+				dns_rdataset_disassociate(sigrdataset);
 		}
 		if (result == ISC_R_SUCCESS) {
 			mname = NULL;
@@ -1438,8 +1436,9 @@
 			goto addname;
 		if (result == DNS_R_NCACHENXRRSET) {
 			dns_rdataset_disassociate(rdataset);
-			INSIST(sigrdataset == NULL ||
-			       ! dns_rdataset_isassociated(sigrdataset));
+			if (sigrdataset != NULL &&
+			    dns_rdataset_isassociated(sigrdataset))
+				dns_rdataset_disassociate(sigrdataset);
 		}
 		if (result == ISC_R_SUCCESS) {
 			mname = NULL;
@@ -1889,10 +1888,8 @@
 		goto setcache;
 	if (result == DNS_R_NCACHENXRRSET) {
 		dns_rdataset_disassociate(rdataset);
-		/*
-		 * Negative cache entries don't have sigrdatasets.
-		 */
-		INSIST(! dns_rdataset_isassociated(sigrdataset));
+		if (dns_rdataset_isassociated(sigrdataset))
+			dns_rdataset_disassociate(sigrdataset);
 	}
 	if (result == ISC_R_SUCCESS) {
 		/* Remember the result as a cache */
diff -Nru bind-9.8.1/lib/dns/rbtdb.c bind-9.8.1-P1/lib/dns/rbtdb.c
--- bind-9.8.1/lib/dns/rbtdb.c	2011-06-09 08:02:42.000000000 +0900
+++ bind-9.8.1-P1/lib/dns/rbtdb.c	2011-11-16 18:32:08.000000000 +0900
@@ -15,7 +15,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: rbtdb.c,v 1.310.8.5 2011-06-08 23:02:42 each Exp $ */
+/* $Id: rbtdb.c,v 1.310.8.5.4.1 2011-11-16 09:32:08 marka Exp $ */
 
 /*! \file */
 
@@ -5053,7 +5053,7 @@
 			      rdataset);
 		if (need_headerupdate(found, search.now))
 			update = found;
-		if (foundsig != NULL) {
+		if (!NEGATIVE(found) && foundsig != NULL) {
 			bind_rdataset(search.rbtdb, node, foundsig, search.now,
 				      sigrdataset);
 			if (need_headerupdate(foundsig, search.now))
@@ -5685,7 +5685,7 @@
 	}
 	if (found != NULL) {
 		bind_rdataset(rbtdb, rbtnode, found, now, rdataset);
-		if (foundsig != NULL)
+		if (!NEGATIVE(found) && foundsig != NULL)
 			bind_rdataset(rbtdb, rbtnode, foundsig, now,
 				      sigrdataset);
 	}
diff -Nru bind-9.8.1/version bind-9.8.1-P1/version
--- bind-9.8.1/version	2011-08-24 11:08:26.000000000 +0900
+++ bind-9.8.1-P1/version	2011-11-16 18:32:07.000000000 +0900
@@ -1,4 +1,4 @@
-# $Id: version,v 1.53.8.9 2011-08-24 02:08:26 marka Exp $
+# $Id: version,v 1.53.8.9.6.1 2011-11-16 09:32:07 marka Exp $
 # 
 # This file must follow /bin/sh rules.  It is imported directly via
 # configure.
@@ -6,5 +6,5 @@
 MAJORVER=9
 MINORVER=8
 PATCHVER=1
-RELEASETYPE=
-RELEASEVER=
+RELEASETYPE=-P
+RELEASEVER=1