libxml2/Fix-memory-leak-in-xmlSwitchInputEncodingInt-error-p.patch
2019-12-25 17:13:34 +08:00

37 lines
1.1 KiB
Diff

From 3776cb4745cecd8f477b45857c9033a908f25cf3 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Thu, 22 Nov 2018 15:27:28 +0100
Subject: [PATCH 35/62] Fix memory leak in xmlSwitchInputEncodingInt error path
Found by OSS-Fuzz.
---
parserInternals.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/parserInternals.c b/parserInternals.c
index 09876ab..0f015de 100644
--- a/parserInternals.c
+++ b/parserInternals.c
@@ -1240,8 +1240,18 @@ xmlSwitchInputEncodingInt(xmlParserCtxtPtr ctxt, xmlParserInputPtr input,
* size to be able to convert the buffer.
*/
xmlErrInternal(ctxt, "switching encoding : no input\n", NULL);
+ /*
+ * Callers assume that the input buffer takes ownership of the
+ * encoding handler. xmlCharEncCloseFunc frees unregistered
+ * handlers and avoids a memory leak.
+ */
+ xmlCharEncCloseFunc(handler);
return (-1);
}
+ /*
+ * We should actually raise an error here, see issue #34.
+ */
+ xmlCharEncCloseFunc(handler);
return (0);
}
--
1.8.3.1