diff --git a/pcre2-10.34-The-JIT-stack-should-be-freed-when-the-low-level-sta.patch b/pcre2-10.34-The-JIT-stack-should-be-freed-when-the-low-level-sta.patch
new file mode 100644
index 0000000..d1b2fea
--- /dev/null
+++ b/pcre2-10.34-The-JIT-stack-should-be-freed-when-the-low-level-sta.patch
@@ -0,0 +1,33 @@
+From 73417f882ac907a182e1491ead2eecb7c5e559cc Mon Sep 17 00:00:00 2001
+From: zherczeg <zherczeg@6239d852-aaf2-0410-a92c-79f79f948069>
+Date: Fri, 24 Jan 2020 08:28:23 +0000
+Subject: [PATCH] The JIT stack should be freed when the low-level stack
+ allocation fails.
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+git-svn-id: svn://vcs.exim.org/pcre2/code/trunk@1207 6239d852-aaf2-0410-a92c-79f79f948069
+Petr Písař: Ported to 10.34.
+---
+ src/pcre2_jit_misc.c | 5 +++++
+
+diff --git a/src/pcre2_jit_misc.c b/src/pcre2_jit_misc.c
+index efdb055..36abdba 100644
+--- a/src/pcre2_jit_misc.c
++++ b/src/pcre2_jit_misc.c
+@@ -145,6 +145,11 @@ maxsize = (maxsize + STACK_GROWTH_RATE - 1) & ~(STACK_GROWTH_RATE - 1);
+ jit_stack = PRIV(memctl_malloc)(sizeof(pcre2_real_jit_stack), (pcre2_memctl *)gcontext);
+ if (jit_stack == NULL) return NULL;
+ jit_stack->stack = sljit_allocate_stack(startsize, maxsize, &jit_stack->memctl);
++if (jit_stack->stack == NULL)
++  {
++  jit_stack->memctl.free(jit_stack, jit_stack->memctl.memory_data);
++  return NULL;
++  }
+ return jit_stack;
+ 
+ #endif
+-- 
+2.21.1
+
diff --git a/pcre2.spec b/pcre2.spec
index e70e612..45eaca6 100644
--- a/pcre2.spec
+++ b/pcre2.spec
@@ -9,7 +9,7 @@
 #%%global rcversion RC1
 Name:       pcre2
 Version:    10.34
-Release:    %{?rcversion:0.}4%{?rcversion:.%rcversion}%{?dist}
+Release:    %{?rcversion:0.}5%{?rcversion:.%rcversion}%{?dist}
 %global     myversion %{version}%{?rcversion:-%rcversion}
 Summary:    Perl-compatible regular expression library
 # the library:                          BSD with exceptions
@@ -60,6 +60,8 @@ Patch2:     pcre2-10.34-Fix-the-too-early-access-of-the-fields-of-a-compiled.pat
 # Fix a crash in JITted code when a *THEN verb is used in a lookahead assertion,
 # upstream bug #2510, in upstream after 10.34
 Patch3:     pcre2-10.34-Fix-THEN-verbs-in-lookahead-assertions-in-JIT.patch
+# Fix a memory leak when allocating a JIT stack fails, in upstream after 10.34
+Patch4:     pcre2-10.34-The-JIT-stack-should-be-freed-when-the-low-level-sta.patch
 BuildRequires:  autoconf
 BuildRequires:  automake
 BuildRequires:  coreutils
@@ -141,6 +143,7 @@ Utilities demonstrating PCRE2 capabilities like pcre2grep or pcre2test.
 %patch1 -p1
 %patch2 -p1
 %patch3 -p1
+%patch4 -p1
 # Because of multilib patch
 libtoolize --copy --force
 autoreconf -vif
@@ -238,6 +241,9 @@ make %{?_smp_mflags} check VERBOSE=yes
 %{_mandir}/man1/pcre2test.*
 
 %changelog
+* Mon Jan 27 2020 Petr Pisar <ppisar@redhat.com> - 10.34-5
+- Fix a memory leak when allocating a JIT stack fails
+
 * Mon Jan 13 2020 Petr Pisar <ppisar@redhat.com> - 10.34-4
 - Fix a crash in JITted code when a *THEN verb is used in a lookahead assertion
   (upstream bug #2510)