diff --git a/bind-9.16-CVE-2026-13204.patch b/bind-9.16-CVE-2026-13204.patch new file mode 100644 index 0000000..2e0a957 --- /dev/null +++ b/bind-9.16-CVE-2026-13204.patch @@ -0,0 +1,154 @@ +From f22132f6faf946cfec02e9b51c58cab54695f42f Mon Sep 17 00:00:00 2001 +From: Evan Hunt +Date: Wed, 13 May 2026 20:45:57 -0700 +Subject: [PATCH] dns_rdataset_addnoqname() could find unsigned NSEC/NSEC3 + +The dns_rdatalist addnoqname() implementation searches for the first +NSEC or NSEC3 record in a message, then for the first RRSIG covering +that type in the same message. Previously, if no RRSIG for the type was +found, the function accepted the unsigned record. Now, it will instead +continue searching until an NSEC or NSEC3 that does have a matching +signature is found. + +When this function is called from validated() in resolver.c, a +non-success return code is now treated as an error instead of triggering +an assertion failure. + +Fixes: isc-projects/bind9#5985 +(cherry picked from commit 57cba571ee31311e54d8a11cb38094d439f04e09) +--- + lib/dns/rbtdb.c | 10 +++++++--- + lib/dns/rdatalist.c | 33 +++++++++++++++++---------------- + lib/dns/resolver.c | 4 +++- + lib/ns/query.c | 4 +++- + 4 files changed, 30 insertions(+), 21 deletions(-) + +diff --git a/lib/dns/rbtdb.c b/lib/dns/rbtdb.c +index 7586e2a..ae478bf 100644 +--- a/lib/dns/rbtdb.c ++++ b/lib/dns/rbtdb.c +@@ -6877,7 +6877,7 @@ delegating_type(dns_rbtdb_t *rbtdb, dns_rbtnode_t *node, + static inline isc_result_t + addnoqname(dns_rbtdb_t *rbtdb, rdatasetheader_t *newheader, + uint32_t maxrrperset, dns_rdataset_t *rdataset) { +- struct noqname *noqname; ++ struct noqname *noqname = NULL; + isc_mem_t *mctx = rbtdb->common.mctx; + dns_name_t name; + dns_rdataset_t neg, negsig; +@@ -6889,7 +6889,9 @@ addnoqname(dns_rbtdb_t *rbtdb, rdatasetheader_t *newheader, + dns_rdataset_init(&negsig); + + result = dns_rdataset_getnoqname(rdataset, &name, &neg, &negsig); +- RUNTIME_CHECK(result == ISC_R_SUCCESS); ++ if (result != ISC_R_SUCCESS) { ++ goto cleanup; ++ } + + noqname = isc_mem_get(mctx, sizeof(*noqname)); + dns_name_init(&noqname->name, NULL); +@@ -6915,7 +6917,9 @@ addnoqname(dns_rbtdb_t *rbtdb, rdatasetheader_t *newheader, + cleanup: + dns_rdataset_disassociate(&neg); + dns_rdataset_disassociate(&negsig); +- free_noqname(mctx, &noqname); ++ if (noqname != NULL) { ++ free_noqname(mctx, &noqname); ++ } + return (result); + } + +diff --git a/lib/dns/rdatalist.c b/lib/dns/rdatalist.c +index 9080015..cc0d190 100644 +--- a/lib/dns/rdatalist.c ++++ b/lib/dns/rdatalist.c +@@ -190,6 +190,7 @@ isc__rdatalist_addnoqname(dns_rdataset_t *rdataset, const dns_name_t *name) { + dns_rdataset_t *neg = NULL; + dns_rdataset_t *negsig = NULL; + dns_rdataset_t *rdset; ++ dns_rdataset_t *sigset; + dns_ttl_t ttl; + + REQUIRE(rdataset != NULL); +@@ -197,28 +198,27 @@ isc__rdatalist_addnoqname(dns_rdataset_t *rdataset, const dns_name_t *name) { + for (rdset = ISC_LIST_HEAD(name->list); rdset != NULL; + rdset = ISC_LIST_NEXT(rdset, link)) + { +- if (rdset->rdclass != rdataset->rdclass) { ++ if (rdset->rdclass != rdataset->rdclass || ++ (rdset->type != dns_rdatatype_nsec && ++ rdset->type != dns_rdatatype_nsec3)) ++ { + continue; + } +- if (rdset->type == dns_rdatatype_nsec || +- rdset->type == dns_rdatatype_nsec3) { +- neg = rdset; +- } +- } +- if (neg == NULL) { +- return (ISC_R_NOTFOUND); +- } + +- for (rdset = ISC_LIST_HEAD(name->list); rdset != NULL; +- rdset = ISC_LIST_NEXT(rdset, link)) +- { +- if (rdset->type == dns_rdatatype_rrsig && +- rdset->covers == neg->type) { +- negsig = rdset; ++ for (sigset = ISC_LIST_HEAD(name->list); sigset != NULL; ++ sigset = ISC_LIST_NEXT(sigset, link)) ++ { ++ if (sigset->type == dns_rdatatype_rrsig && ++ sigset->covers == rdset->type) ++ { ++ neg = rdset; ++ negsig = sigset; ++ break; ++ } + } + } + +- if (negsig == NULL) { ++ if (neg == NULL || negsig == NULL) { + return (ISC_R_NOTFOUND); + } + /* +@@ -234,6 +234,7 @@ isc__rdatalist_addnoqname(dns_rdataset_t *rdataset, const dns_name_t *name) { + rdataset->ttl = neg->ttl = negsig->ttl = ttl; + rdataset->attributes |= DNS_RDATASETATTR_NOQNAME; + rdataset->private6 = name; ++ + return (ISC_R_SUCCESS); + } + +diff --git a/lib/dns/resolver.c b/lib/dns/resolver.c +index a44ae73..b73c8e0 100644 +--- a/lib/dns/resolver.c ++++ b/lib/dns/resolver.c +@@ -6010,7 +6010,9 @@ validated(isc_task_t *task, isc_event_t *event) { + result = dns_rdataset_addnoqname( + vevent->rdataset, + vevent->proofs[DNS_VALIDATOR_NOQNAMEPROOF]); +- RUNTIME_CHECK(result == ISC_R_SUCCESS); ++ if (result != ISC_R_SUCCESS) { ++ goto noanswer_response; ++ } + INSIST(vevent->sigrdataset != NULL); + vevent->sigrdataset->ttl = vevent->rdataset->ttl; + if (vevent->proofs[DNS_VALIDATOR_CLOSESTENCLOSER] != NULL) { +diff --git a/lib/ns/query.c b/lib/ns/query.c +index 4d6dd5d..673fe43 100644 +--- a/lib/ns/query.c ++++ b/lib/ns/query.c +@@ -7399,7 +7399,9 @@ query_addnoqnameproof(query_ctx_t *qctx) { + } + + result = dns_rdataset_getnoqname(qctx->noqname, fname, neg, negsig); +- RUNTIME_CHECK(result == ISC_R_SUCCESS); ++ if (result != ISC_R_SUCCESS) { ++ goto cleanup; ++ } + + query_addrrset(qctx, &fname, &neg, &negsig, dbuf, + DNS_SECTION_AUTHORITY); diff --git a/bind9.16.spec b/bind9.16.spec index fd11515..74b119f 100644 --- a/bind9.16.spec +++ b/bind9.16.spec @@ -62,7 +62,7 @@ Summary: The Berkeley Internet Name Domain (BIND) DNS (Domain Name System) serv Name: bind9.16 License: MPLv2.0 Version: 9.16.23 -Release: 0.22%{?dist}.6 +Release: 0.22%{?dist}.7 Epoch: 32 Url: https://www.isc.org/downloads/bind/ # @@ -187,6 +187,8 @@ Patch230: bind-9.16-CVE-2026-3039.patch # https://gitlab.isc.org/isc-projects/bind9/-/commit/ec2c98181115bd5f6c7087fcc74d816490d4312e # https://gitlab.isc.org/isc-projects/bind9/-/commit/e5abd37cb2330af1fbfeba68eb32f2873390226d Patch231: bind-9.16-CVE-2026-5946.patch +# https://github.com/isc-projects/bind9/commit/1b90fbb4f9d3d923516ff7841171269b993cfd6f +Patch233: bind-9.16-CVE-2026-13204.patch %{?systemd_ordering} Requires: coreutils @@ -529,6 +531,7 @@ in HTML and PDF format. %patch226 -p1 -b .CVE-2026-1519 %patch230 -p1 -b .CVE-2026-3039 %patch231 -p1 -b .CVE-2026-5946 +%patch233 -p1 -b .CVE-2026-13204 %if %{with PKCS11} %patch135 -p1 -b .config-pkcs11 @@ -1271,6 +1274,10 @@ fi; %endif %changelog +* Thu Jul 23 2026 RHEL Packaging Agent - 32:9.16.23-0.22.7 +- Fix CVE-2026-13204: ensure NSEC/NSEC3 has matching RRSIG +- Resolves: RHEL-213478 + * Mon May 25 2026 Petr Menšík - 32:9.16.23-0.22.6 - Fix GSS-API resource leak (CVE-2026-3039) - Invalid handling of CLASS != IN (CVE-2026-5946)