From efcb347440ade24b9f1054671e6bd05e60b4cafd Mon Sep 17 00:00:00 2001 From: Samanta Navarro Date: Tue, 15 Feb 2022 11:56:57 +0000 Subject: [PATCH] Prevent integer overflow in copyString The copyString function is only used for encoding string supplied by the library user. Upstream-Status: Backport https://github.com/libexpat/libexpat/pull/560/commits/efcb347440ade24b9f1054671e6bd05e60b4cafd CVE: CVE-2022-25314 Signed-off-by: Steve Sakoman --- expat/lib/xmlparse.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/xmlparse.c b/lib/xmlparse.c index 4b43e613..a39377c2 100644 --- a/lib/xmlparse.c +++ b/lib/xmlparse.c @@ -7412,7 +7412,7 @@ getElementType(XML_Parser parser, const ENCODING *enc, const char *ptr, static XML_Char * copyString(const XML_Char *s, const XML_Memory_Handling_Suite *memsuite) { - int charsRequired = 0; + size_t charsRequired = 0; XML_Char *result; /* First determine how long the string is */