30 lines
918 B
Diff
30 lines
918 B
Diff
From e15838ab5454514e53981585c71cd20bb1537d01 Mon Sep 17 00:00:00 2001
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From: Nick Wellnhofer <wellnhofer@aevum.de>
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Date: Sun, 5 Mar 2023 14:09:14 +0100
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Subject: [PATCH] malloc-fail: Fix null deref in xmlSchemaParseWildcardNs
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Found with libFuzzer, see #344.
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Reference:https://github.com/GNOME/libxml2/commit/e15838ab5454514e53981585c71cd20bb1537d01
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Conflict:NA
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---
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xmlschemas.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/xmlschemas.c b/xmlschemas.c
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index 9ace2b7..dd79d2e 100644
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--- a/xmlschemas.c
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+++ b/xmlschemas.c
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@@ -6867,6 +6867,8 @@ xmlSchemaParseWildcardNs(xmlSchemaParserCtxtPtr ctxt,
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*/
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attr = xmlSchemaGetPropNode(node, "namespace");
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ns = xmlSchemaGetNodeContent(ctxt, (xmlNodePtr) attr);
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+ if (ns == NULL)
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+ return (-1);
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if ((attr == NULL) || (xmlStrEqual(ns, BAD_CAST "##any")))
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wildc->any = 1;
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else if (xmlStrEqual(ns, BAD_CAST "##other")) {
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--
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2.27.0
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