diff --git a/pkgs/development/libraries/qt-6/modules/qtsvg.nix b/pkgs/development/libraries/qt-6/modules/qtsvg.nix
index 9031f8805ac9..2f2355bad598 100644
--- a/pkgs/development/libraries/qt-6/modules/qtsvg.nix
+++ b/pkgs/development/libraries/qt-6/modules/qtsvg.nix
@@ -5,6 +5,7 @@
 , libmng
 , zlib
 , pkg-config
+, fetchpatch2
 }:
 
 qtModule {
@@ -12,4 +13,13 @@ qtModule {
   qtInputs = [ qtbase ];
   buildInputs = [ libwebp jasper libmng zlib ];
   nativeBuildInputs = [ pkg-config ];
+  patches = [
+    # Fix nullptr dereference with invalid SVG
+    # https://bugreports.qt.io/projects/QTBUG/issues/QTBUG-117944
+    (fetchpatch2 {
+      name = "QTBUG-117944.patch";
+      url = "https://code.qt.io/cgit/qt/qtsvg.git/patch/?id=edc8ca7f";
+      hash = "sha256-kBQYlQqPb0QkRhatQyaGdxE1Y5zHd6/ZEd5zn0gRVoM=";
+    })
+  ];
 }