Add mctx attach/detach when creating/destroying a memory pool

This should make sure that the memory context is not destroyed
before the memory pool, which is using the context.

Related: RHEL-25392
; Related: CVE-2023-50387

bind-9.16-isc-mempool-attach.patch

@@ -0,0 +1,40 @@
+From d249889a9c18df7792ca3cd8d97897e4fb5824b5 Mon Sep 17 00:00:00 2001
+From: Aram Sargsyan <aram@isc.org>
+Date: Wed, 31 Aug 2022 12:30:38 +0000
+Subject: [PATCH] Add mctx attach/detach when creating/destroying a memory pool
+
+This should make sure that the memory context is not destroyed
+before the memory pool, which is using the context.
+
+(cherry picked from commit e97c3eea954e055634b72c21325d2611e960ee94)
+---
+ lib/isc/mem.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/lib/isc/mem.c b/lib/isc/mem.c
+index f84d300..33ece7a 100644
+--- a/lib/isc/mem.c
++++ b/lib/isc/mem.c
+@@ -1656,7 +1656,8 @@ isc_mempool_create(isc_mem_t *mctx0, size_t size, isc_mempool_t **mpctxp) {
+ 	mpctx->common.impmagic = MEMPOOL_MAGIC;
+ 	mpctx->common.magic = ISCAPI_MPOOL_MAGIC;
+ 	mpctx->lock = NULL;
+-	mpctx->mctx = mctx;
++	mpctx->mctx = NULL;
++	isc_mem_attach((isc_mem_t *)mctx, (isc_mem_t **)&mpctx->mctx);
+ 	/*
+ 	 * Mempools are stored as a linked list of element.
+ 	 */
+@@ -1765,7 +1766,8 @@ isc_mempool_destroy(isc_mempool_t **mpctxp) {
+ 	mpctx->common.impmagic = 0;
+ 	mpctx->common.magic = 0;
+ 
+-	isc_mem_put((isc_mem_t *)mpctx->mctx, mpctx, sizeof(isc__mempool_t));
++	isc_mem_putanddetach((isc_mem_t **)&mpctx->mctx, mpctx,
++			     sizeof(isc__mempool_t));
+ 
+ 	if (lock != NULL) {
+ 		UNLOCK(lock);
+-- 
+2.43.2
+

bind9.16.spec

@@ -140,6 +140,8 @@ Patch199: bind-9.16-CVE-2023-4408-test1.patch
 Patch200: bind-9.16-CVE-2023-4408-test2.patch
 # Downstream only change, fixes patch 171
 Patch201: bind-9.16-system-test-cds.patch
+# https://gitlab.isc.org/isc-projects/bind9/commit/32779aba8a0a5f852c611f44ecbeab5aab633e34
+Patch202: bind-9.16-isc-mempool-attach.patch
 
 %{?systemd_ordering}
 Requires:       coreutils
@@ -462,6 +464,7 @@ in HTML and PDF format.
 %patch199 -p1
 %patch200 -p1
 %patch201 -p1 -b .test-variant-def
+%patch202 -p1 -b .mempool-attach
 
 %if %{with PKCS11}
 %patch135 -p1 -b .config-pkcs11