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From 2232473733b7313d67de8836ea3b29eec6e8e285 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Sat, 17 Aug 2019 16:51:53 +0200
Subject: [PATCH] Fix dangling pointer in xsltCopyText
xsltCopyText didn't reset ctxt->lasttext in some cases which could
lead to various memory errors in relation with CDATA sections in input
documents.
Found by OSS-Fuzz.
---
libxslt/transform.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libxslt/transform.c b/libxslt/transform.c
index 95ebd073..d7ab0b66 100644
--- a/libxslt/transform.c
+++ b/libxslt/transform.c
@@ -1094,6 +1094,8 @@ xsltCopyText(xsltTransformContextPtr ctxt, xmlNodePtr target,
if ((copy->content = xmlStrdup(cur->content)) == NULL)
return NULL;
}
+
+ ctxt->lasttext = NULL;
} else {
/*
* normal processing. keep counters to extend the text node
--
2.22.0
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