diff --git a/SOURCES/rpm-4.11.x-bump-up-the-limit-of-signature-header-to-64MB.patch b/SOURCES/rpm-4.11.x-bump-up-the-limit-of-signature-header-to-64MB.patch
new file mode 100644
index 0000000..7bf036d
--- /dev/null
+++ b/SOURCES/rpm-4.11.x-bump-up-the-limit-of-signature-header-to-64MB.patch
@@ -0,0 +1,12 @@
+diff -up rpm-4.11.3/lib/signature.c.orig rpm-4.11.3/lib/signature.c
+--- rpm-4.11.3/lib/signature.c.orig	2021-09-17 09:47:03.635252057 +0200
++++ rpm-4.11.3/lib/signature.c	2021-09-17 09:50:12.172825113 +0200
+@@ -102,7 +102,7 @@ rpmRC rpmReadSignature(FD_t fd, Header *
+ 	goto exit;
+     }
+     dl = ntohl(block[3]);
+-    if (dl < 0 || dl > 8192) {
++    if (dl < 0 || dl > 64 * 1024 * 1024) {
+ 	rasprintf(&buf, 
+ 		  _("sigh data: BAD, no. of  bytes(%d) out of range\n"), dl);
+ 	goto exit;
diff --git a/SPECS/rpm.spec b/SPECS/rpm.spec
index d49a2fc..dccf4bb 100644
--- a/SPECS/rpm.spec
+++ b/SPECS/rpm.spec
@@ -21,7 +21,7 @@
 Summary: The RPM package management system
 Name: rpm
 Version: %{rpmver}
-Release: %{?snapver:0.%{snapver}.}45%{?dist}
+Release: %{?snapver:0.%{snapver}.}46%{?dist}
 Group: System Environment/Base
 Url: http://www.rpm.org/
 Source0: http://rpm.org/releases/rpm-4.11.x/%{name}-%{srcver}.tar.bz2
@@ -105,6 +105,7 @@ Patch200: rpm-4.11.x-filter-soname-deps.patch
 Patch201: rpm-4.11.x-do-not-filter-ld64.patch
 
 Patch202: rpm-4.14.x-PGP-handle-no-EOL-at-EOF.patch
+Patch203: rpm-4.11.x-bump-up-the-limit-of-signature-header-to-64MB.patch
 
 # These are not yet upstream
 Patch301: rpm-4.6.0-niagara.patch
@@ -395,6 +396,7 @@ Requires: rpm-libs%{_isa} = %{version}-%{release}
 %patch201 -p1 -b .dont-filter-ld64
 
 %patch202 -p1 -b .PGP-no-EOL
+%patch203 -p1 -b .sig-limit-bump
 
 %patch301 -p1 -b .niagara
 %patch302 -p1 -b .geode
@@ -657,6 +659,9 @@ exit 0
 %doc COPYING doc/librpm/html/*
 
 %changelog
+* Fri Sep 17 2021 Michal Domonkos <mdomonko@redhat.com> - 4.11.3-46
+- Bump up the limit of signature header to 64MB (#1993242)
+
 * Tue Jun 02 2020 Michal Domonkos <mdomonko@redhat.com> - 4.11.3-45
 - Actually apply the previous patch