libxml2/backport-malloc-fail-Add-error-check-in-htmlParseHTMLAttribut.patch
zhuofeng feb7e8218d backport upstream patches
(cherry picked from commit ec64ed27a9add0f7a9bf6ee351ad67302a60c383)
2023-06-20 11:16:46 +08:00

35 lines
978 B
Diff

From 62f199ed7d1c99999030810495bd12fd5b86fee1 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Fri, 17 Mar 2023 12:40:46 +0100
Subject: [PATCH] malloc-fail: Add error check in htmlParseHTMLAttribute
This function must return NULL is an error occurs.
Found by OSS-Fuzz, see #344.
Reference:https://github.com/GNOME/libxml2/commit/62f199ed7d1c99999030810495bd12fd5b86fee1
Conflict:NA
---
HTMLparser.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/HTMLparser.c b/HTMLparser.c
index 3682807..42d1b29 100644
--- a/HTMLparser.c
+++ b/HTMLparser.c
@@ -2846,6 +2846,10 @@ htmlParseHTMLAttribute(htmlParserCtxtPtr ctxt, const xmlChar stop) {
out = &buffer[indx];
}
c = CUR_CHAR(l);
+ if (ctxt->instate == XML_PARSER_EOF) {
+ xmlFree(buffer);
+ return(NULL);
+ }
if (c < 0x80)
{ *out++ = c; bits= -6; }
else if (c < 0x800)
--
2.27.0