[3.13] gh-148418: Fix a possible reference leak in a corrupted TYPE_CODE marshal stream (GH-148419) (GH-149364)

miss-islington · Wulian233 · web-flow · commit 6d6471b7eb09 · 2026-05-04T14:06:00.000Z
(cherry picked from commit c3972f2) Co-authored-by: Wulian233 <1055917385@qq.com>
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2026-04-12-10-40-57.gh-issue-148418.ggA1LZ.rst b/Misc/NEWS.d/next/Core_and_Builtins/2026-04-12-10-40-57.gh-issue-148418.ggA1LZ.rst
@@ -0,0 +1 @@
+Fix a possible reference leak in a corrupted ``TYPE_CODE`` marshal stream.
diff --git a/Python/marshal.c b/Python/marshal.c
@@ -1487,7 +1487,7 @@ r_object(RFILE *p)
                 goto code_error;
             firstlineno = (int)r_long(p);
             if (firstlineno == -1 && PyErr_Occurred())
-                break;
+                goto code_error;
             linetable = r_object(p);
             if (linetable == NULL)
                 goto code_error;

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	+Fix a possible reference leak in a corrupted ``TYPE_CODE`` marshal stream.