diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-04-28-23-37-30.gh-issue-92036.GZJAC9.rst b/Misc/NEWS.d/next/Core and Builtins/2022-04-28-23-37-30.gh-issue-92036.GZJAC9.rst
new file mode 100644
index 00000000000000..78094c5e4fea7c
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2022-04-28-23-37-30.gh-issue-92036.GZJAC9.rst
@@ -0,0 +1,5 @@
+Fix a crash in subinterpreters related to the garbage collector. When a
+subinterpreter is deleted, untrack all objects tracked by its GC. To prevent a
+crash in deallocator functions expecting objects to be tracked by the GC, leak
+a strong reference to these objects on purpose, so they are never deleted and
+their deallocator functions are not called. Patch by Victor Stinner.
diff --git a/Modules/gcmodule.c b/Modules/gcmodule.c
index 3cf1a00b003b3c..cb5989e69d21b6 100644
--- a/Modules/gcmodule.c
+++ b/Modules/gcmodule.c
@@ -2157,6 +2157,12 @@ gc_fini_untrack(PyGC_Head *list)
for (gc = GC_NEXT(list); gc != list; gc = GC_NEXT(list)) {
PyObject *op = FROM_GC(gc);
_PyObject_GC_UNTRACK(op);
+ // gh-92036: If a deallocator function expect the object to be tracked
+ // by the GC (ex: func_dealloc()), it can crash if called on an object
+ // which is no longer tracked by the GC. Leak one strong reference on
+ // purpose so the object is never deleted and its deallocator is not
+ // called.
+ Py_INCREF(op);
}
}
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