diff --git a/0000-fix-null-pointer-dereference.patch b/0000-fix-null-pointer-dereference.patch
new file mode 100644
index 0000000..ef4206e
--- /dev/null
+++ b/0000-fix-null-pointer-dereference.patch
@@ -0,0 +1,151 @@
+From a340963e0c40f3ea85fea911c79fbaaa5af93e27 Mon Sep 17 00:00:00 2001
+From: suve <veg@svgames.pl>
+Date: Thu, 9 Jun 2022 15:46:20 +0200
+Subject: [PATCH 1/2] Check if 24-bit colour codes contain 3 arguments
+
+---
+ aha.c | 64 ++++++++++++++++++++++++++---------------------------------
+ 1 file changed, 28 insertions(+), 36 deletions(-)
+
+diff --git a/aha.c b/aha.c
+index 46e43c0..bf22373 100644
+--- a/aha.c
++++ b/aha.c
+@@ -833,25 +833,21 @@ int main(int argc,char* args[])
+ 										if (momelem->value == 38 &&
+ 											momelem->next &&
+ 											momelem->next->value == 2 &&
+-											momelem->next->next)// 38;2;<n> -> 24 Bit
++											momelem->next->next &&
++											momelem->next->next->next &&
++											momelem->next->next->next->next)// 38;2;<r>;<g>;<b> -> 24 Bit
+ 										{
+-											momelem = momelem->next->next;
+-											pelem r,g,b;
+-											r = momelem;
+-											momelem = momelem->next;
+-											g = momelem;
+-											if ( momelem )
+-												momelem = momelem->next;
+-											b = momelem;
+-											if ( r && g && b )
+-											{
+-												state.highlighted = 0;
+-												state.fc_colormode = MODE_24BIT;
+-												*dest =
+-													(r->value & 255) * 65536 +
+-													(g->value & 255) * 256 +
+-													(b->value & 255);
+-											}
++											pelem r = momelem->next->next;
++											pelem g = r->next;
++											pelem b = g->next;
++											momelem = b;
++
++											state.highlighted = 0;
++											state.fc_colormode = MODE_24BIT;
++											*dest =
++												(r->value & 255) * 65536 +
++												(g->value & 255) * 256 +
++												(b->value & 255);
+ 										}
+ 										else
+ 										{
+@@ -901,25 +897,21 @@ int main(int argc,char* args[])
+ 										if (momelem->value == 48 &&
+ 											momelem->next &&
+ 											momelem->next->value == 2 &&
+-											momelem->next->next)// 48;2;<n> -> 24 Bit
++											momelem->next->next &&
++											momelem->next->next->next &&
++											momelem->next->next->next->next)// 48;2;<r>;<g>;<b> -> 24 Bit
+ 										{
+-											momelem = momelem->next->next;
+-											pelem r,g,b;
+-											r = momelem;
+-											momelem = momelem->next;
+-											g = momelem;
+-											if ( momelem )
+-												momelem = momelem->next;
+-											b = momelem;
+-											if ( r && g && b )
+-											{
+-												state.bc_colormode = MODE_24BIT;
+-												state.highlighted = 0;
+-												*dest =
+-													(r->value & 255) * 65536 +
+-													(g->value & 255) * 256 +
+-													(b->value & 255);
+-											}
++											pelem r = momelem->next->next;
++											pelem g = r->next;
++											pelem b = g->next;
++											momelem = b;
++
++											state.bc_colormode = MODE_24BIT;
++											state.highlighted = 0;
++											*dest =
++												(r->value & 255) * 65536 +
++												(g->value & 255) * 256 +
++												(b->value & 255);
+ 										}
+ 										else
+ 										{
+
+From 1b8b994b058920cdc2fe144dca3243bacf1d49b2 Mon Sep 17 00:00:00 2001
+From: suve <veg@svgames.pl>
+Date: Thu, 9 Jun 2022 15:55:29 +0200
+Subject: [PATCH 2/2] Add a helper function to avoid ->next checks
+
+---
+ aha.c | 23 +++++++++++++----------
+ 1 file changed, 13 insertions(+), 10 deletions(-)
+
+diff --git a/aha.c b/aha.c
+index bf22373..2bfebb7 100644
+--- a/aha.c
++++ b/aha.c
+@@ -138,6 +138,15 @@ pelem parseInsert(char* s)
+ 	return firstelem;
+ }
+ 
++int parseDepthAtLeast(pelem elem, unsigned int wanted) {
++	while (elem != NULL) {
++		if (wanted == 0) return 1;
++		elem = elem->next;
++		--wanted;
++	}
++	return 0;
++}
++
+ void deleteParse(pelem elem)
+ {
+ 	while (elem!=NULL)
+@@ -831,11 +840,8 @@ int main(int argc,char* args[])
+ 										}
+ 										else
+ 										if (momelem->value == 38 &&
+-											momelem->next &&
+-											momelem->next->value == 2 &&
+-											momelem->next->next &&
+-											momelem->next->next->next &&
+-											momelem->next->next->next->next)// 38;2;<r>;<g>;<b> -> 24 Bit
++											parseDepthAtLeast(momelem, 4) &&
++											momelem->next->value == 2)// 38;2;<r>;<g>;<b> -> 24 Bit
+ 										{
+ 											pelem r = momelem->next->next;
+ 											pelem g = r->next;
+@@ -895,11 +901,8 @@ int main(int argc,char* args[])
+ 										}
+ 										else
+ 										if (momelem->value == 48 &&
+-											momelem->next &&
+-											momelem->next->value == 2 &&
+-											momelem->next->next &&
+-											momelem->next->next->next &&
+-											momelem->next->next->next->next)// 48;2;<r>;<g>;<b> -> 24 Bit
++											parseDepthAtLeast(momelem, 4) &&
++											momelem->next->value == 2)// 48;2;<r>;<g>;<b> -> 24 Bit
+ 										{
+ 											pelem r = momelem->next->next;
+ 											pelem g = r->next;
diff --git a/aha.spec b/aha.spec
index d5c3147..c67fa1e 100644
--- a/aha.spec
+++ b/aha.spec
@@ -1,13 +1,21 @@
 Name: aha
-Version: 0.5.1
-Release: 3%{?dist}
 Summary: Convert terminal output to HTML
-
 License: MPLv1.1 or LGPLv2+
+
+Version: 0.5.1
+Release: 4%{?dist}
+
 URL: https://github.com/theZiz/aha
 Source0: %{URL}/archive/%{version}/%{name}-%{version}.tar.gz
 
-BuildRequires: gcc make
+# Fix a null pointer dereference when interpreting
+# invalid 24-bit color code escape sequences.
+#
+# Submitted upstream: https://github.com/theZiz/aha/pull/97
+Patch0: 0000-fix-null-pointer-dereference.patch
+
+BuildRequires: gcc
+BuildRequires: make
 
 
 %description
@@ -17,7 +25,7 @@ and produces an HTML rendition of the original text.
 
 
 %prep
-%setup -q
+%autosetup -p1
 # Extract license header from source code
 cat aha.c | awk '1;/\*\//{exit}' > LICENSE
 
@@ -38,6 +46,9 @@ cat aha.c | awk '1;/\*\//{exit}' > LICENSE
 
 
 %changelog
+* Mon Jul 11 2022 Artur Frenszek-Iwicki <fedora@svgames.pl> - 0.5.1-4
+- Add a patch to fix segfault because of null pointer dereference
+
 * Wed Jul 21 2021 Fedora Release Engineering <releng@fedoraproject.org> - 0.5.1-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass_Rebuild