diff -Nru libapache2-mod-perl2-2.0.11/debian/changelog libapache2-mod-perl2-2.0.11/debian/changelog
--- libapache2-mod-perl2-2.0.11/debian/changelog	2020-11-29 14:59:21.000000000 +0000
+++ libapache2-mod-perl2-2.0.11/debian/changelog	2021-02-22 18:00:30.000000000 +0000
@@ -1,3 +1,11 @@
+libapache2-mod-perl2 (2.0.11-4) unstable; urgency=medium
+
+  * Add a patch from upstream SVN to fix a SIGSEGV crash due to wrong use
+    of perl_parse(). (LP: #1915959)
+  * Update years of packaging copyright.
+
+ -- gregor herrmann <gregoa@debian.org>  Mon, 22 Feb 2021 19:00:30 +0100
+
 libapache2-mod-perl2 (2.0.11-3) unstable; urgency=medium
 
   [ Debian Janitor ]
diff -Nru libapache2-mod-perl2-2.0.11/debian/copyright libapache2-mod-perl2-2.0.11/debian/copyright
--- libapache2-mod-perl2-2.0.11/debian/copyright	2020-11-29 14:59:21.000000000 +0000
+++ libapache2-mod-perl2-2.0.11/debian/copyright	2021-02-22 18:00:30.000000000 +0000
@@ -38,7 +38,7 @@
  2007-2008, Gunnar Wolf <gwolf@debian.org>
  2007, Steve Langasek <vorlon@debian.org>
  2008, Niko Tyni <ntyni@debian.org>
- 2008-2020, gregor herrmann <gregoa@debian.org>
+ 2008-2021, gregor herrmann <gregoa@debian.org>
  2011, Nicholas Bamber <nicholas@periapt.co.uk>
  2018, Xavier Guimard <yadd@debian.org>
 License: Apache-2.0
diff -Nru libapache2-mod-perl2-2.0.11/debian/patches/Fix_SIGSEGV_perl_parse.patch libapache2-mod-perl2-2.0.11/debian/patches/Fix_SIGSEGV_perl_parse.patch
--- libapache2-mod-perl2-2.0.11/debian/patches/Fix_SIGSEGV_perl_parse.patch	1970-01-01 00:00:00.000000000 +0000
+++ libapache2-mod-perl2-2.0.11/debian/patches/Fix_SIGSEGV_perl_parse.patch	2021-02-22 18:00:30.000000000 +0000
@@ -0,0 +1,29 @@
+Description: Fix SIGSEGV crash due to wrong use of perl_parse()
+Origin: https://svn.apache.org/viewvc?view=revision&revision=1886793
+Bug-Ubuntu: https://bugs.launchpad.net/ubuntu/+source/libapache2-mod-perl2/+bug/1915959
+Author: Charles Pigott <cpigott@rapitasystems.com>
+Reviewed-by: gregor herrmann <gregoa@debian.org>
+Last-Update: 2021-02-22
+
+--- a/src/modules/perl/modperl_config.c
++++ b/src/modules/perl/modperl_config.c
+@@ -163,7 +163,8 @@
+     scfg->PerlPostConfigRequire =
+         apr_array_make(p, 1, sizeof(modperl_require_file_t *));
+ 
+-    scfg->argv = apr_array_make(p, 2, sizeof(char *));
++    /* 2 arguments + NULL terminator */
++    scfg->argv = apr_array_make(p, 3, sizeof(char *));
+ 
+     scfg->setvars = apr_table_make(p, 2);
+     scfg->configvars = apr_table_make(p, 2);
+@@ -219,6 +220,9 @@
+ 
+     *argc = scfg->argv->nelts;
+ 
++    /* perl_parse() expects a NULL terminated argv array */
++    modperl_config_srv_argv_push(NULL);
++
+     MP_TRACE_g_do(dump_argv(scfg));
+ 
+     return (char **)scfg->argv->elts;
diff -Nru libapache2-mod-perl2-2.0.11/debian/patches/series libapache2-mod-perl2-2.0.11/debian/patches/series
--- libapache2-mod-perl2-2.0.11/debian/patches/series	2020-11-29 14:59:21.000000000 +0000
+++ libapache2-mod-perl2-2.0.11/debian/patches/series	2021-02-22 18:00:30.000000000 +0000
@@ -12,3 +12,4 @@
 360-conditional-linux-pid-module.patch
 0001-Skip-t-protocol-pseudo_http.t-incompatible-with-Apac.patch
 honour-env-LDFLAGS.patch
+Fix_SIGSEGV_perl_parse.patch