48802015a9
Fixes CVE-2019-20388: xmlSchemaPreRun in xmlschemas.c in libxml2 2.9.10 allows an xmlSchemaValidateStream memory leak. Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
36 lines
1.1 KiB
Diff
36 lines
1.1 KiB
Diff
From 7ffcd44d7e6c46704f8af0321d9314cd26e0e18a Mon Sep 17 00:00:00 2001
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From: Zhipeng Xie <xiezhipeng1@huawei.com>
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Date: Tue, 20 Aug 2019 16:33:06 +0800
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Subject: [PATCH] Fix memory leak in xmlSchemaValidateStream
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When ctxt->schema is NULL, xmlSchemaSAXPlug->xmlSchemaPreRun
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alloc a new schema for ctxt->schema and set vctxt->xsiAssemble
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to 1. Then xmlSchemaVStart->xmlSchemaPreRun initialize
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vctxt->xsiAssemble to 0 again which cause the alloced schema
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can not be freed anymore.
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Found with libFuzzer.
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Signed-off-by: Zhipeng Xie <xiezhipeng1@huawei.com>
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[import into Buildroot]
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Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
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---
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xmlschemas.c | 1 -
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1 file changed, 1 deletion(-)
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diff --git a/xmlschemas.c b/xmlschemas.c
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index 301c8449..39d92182 100644
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--- a/xmlschemas.c
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+++ b/xmlschemas.c
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@@ -28090,7 +28090,6 @@ xmlSchemaPreRun(xmlSchemaValidCtxtPtr vctxt) {
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vctxt->nberrors = 0;
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vctxt->depth = -1;
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vctxt->skipDepth = -1;
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- vctxt->xsiAssemble = 0;
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vctxt->hasKeyrefs = 0;
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#ifdef ENABLE_IDC_NODE_TABLES_TEST
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vctxt->createIDCNodeTables = 1;
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--
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2.24.1
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