diff -r 4ed0e46aa9dc -r a166a15f7b74 src/server/plugins/postgresql/webdav.c
--- a/src/server/plugins/postgresql/webdav.c	Fri Aug 16 18:09:05 2024 +0200
+++ b/src/server/plugins/postgresql/webdav.c	Tue Aug 20 12:34:32 2024 +0200
@@ -935,6 +935,7 @@
     }
     ext_prop->column = ext;
     ext_prop->property = property;
+    ext_prop->next = NULL;
 
     CxAllocator *a = pool_allocator(pool);
     proppatch->ext[ext->tableindex].isused = TRUE;