DivestOS/Patches/LineageOS-18.1/android_external_expat/0001-lib-Reject-negative-len-for-XML_ParseBuffer.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Sebastian Pipping <sebastian@pipping.org>
Date: Mon, 19 Aug 2024 22:26:07 +0200
Subject: [PATCH] lib: Reject negative len for XML_ParseBuffer
Reported by TaiYou
---
lib/xmlparse.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/lib/xmlparse.c b/lib/xmlparse.c
index c84b5ed..02f71c4 100644
--- a/lib/xmlparse.c
+++ b/lib/xmlparse.c
@@ -1874,6 +1874,12 @@ XML_ParseBuffer(XML_Parser parser, int len, int isFinal) {
if (parser == NULL)
return XML_STATUS_ERROR;
+
+ if (len < 0) {
+ parser->m_errorCode = XML_ERROR_INVALID_ARGUMENT;
+ return XML_STATUS_ERROR;
+ }
+
switch (parser->m_parsingStatus.parsing) {
case XML_SUSPENDED:
parser->m_errorCode = XML_ERROR_SUSPENDED;