[oe-commits] [openembedded-core] 21/22: libxml2: Fix CVE-2019-20388
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Sat Mar 7 10:57:36 UTC 2020
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rpurdie pushed a commit to branch zeus
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commit 49131908e3510dc69e0f278889803a461c2d96c0
Author: Lee Chee Yang <chee.yang.lee at intel.com>
AuthorDate: Fri Feb 21 23:00:32 2020 +0200
libxml2: Fix CVE-2019-20388
see:
https://gitlab.gnome.org/GNOME/libxml2/merge_requests/68
(From OE-Core rev: 12a5eb0ea6f530ad7be2e58d4091b4edadbf461b)
Signed-off-by: Lee Chee Yang <chee.yang.lee at intel.com>
Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
Signed-off-by: Adrian Bunk <bunk at stusta.de>
Signed-off-by: Anuj Mittal <anuj.mittal at intel.com>
---
.../libxml/libxml2/CVE-2019-20388.patch | 37 ++++++++++++++++++++++
meta/recipes-core/libxml/libxml2_2.9.9.bb | 1 +
2 files changed, 38 insertions(+)
diff --git a/meta/recipes-core/libxml/libxml2/CVE-2019-20388.patch b/meta/recipes-core/libxml/libxml2/CVE-2019-20388.patch
new file mode 100644
index 0000000..4ee2d4f
--- /dev/null
+++ b/meta/recipes-core/libxml/libxml2/CVE-2019-20388.patch
@@ -0,0 +1,37 @@
+From 7ffcd44d7e6c46704f8af0321d9314cd26e0e18a Mon Sep 17 00:00:00 2001
+From: Zhipeng Xie <xiezhipeng1 at huawei.com>
+Date: Tue, 20 Aug 2019 16:33:06 +0800
+Subject: [PATCH] Fix memory leak in xmlSchemaValidateStream
+
+When ctxt->schema is NULL, xmlSchemaSAXPlug->xmlSchemaPreRun
+alloc a new schema for ctxt->schema and set vctxt->xsiAssemble
+to 1. Then xmlSchemaVStart->xmlSchemaPreRun initialize
+vctxt->xsiAssemble to 0 again which cause the alloced schema
+can not be freed anymore.
+
+Found with libFuzzer.
+
+Upstream-Status: Accepted [https://gitlab.gnome.org/GNOME/libxml2/commit/7ffcd44d7e6c46704f8af0321d9314cd26e0e18a]
+CVE: CVE-2019-20388
+
+Signed-off-by: Zhipeng Xie <xiezhipeng1 at huawei.com>
+Signed-off-by: Lee Chee Yang <chee.yang.lee at intel.com>
+---
+ xmlschemas.c | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/xmlschemas.c b/xmlschemas.c
+index 301c8449..39d92182 100644
+--- a/xmlschemas.c
++++ b/xmlschemas.c
+@@ -28090,7 +28090,6 @@ xmlSchemaPreRun(xmlSchemaValidCtxtPtr vctxt) {
+ vctxt->nberrors = 0;
+ vctxt->depth = -1;
+ vctxt->skipDepth = -1;
+- vctxt->xsiAssemble = 0;
+ vctxt->hasKeyrefs = 0;
+ #ifdef ENABLE_IDC_NODE_TABLES_TEST
+ vctxt->createIDCNodeTables = 1;
+--
+2.24.1
+
diff --git a/meta/recipes-core/libxml/libxml2_2.9.9.bb b/meta/recipes-core/libxml/libxml2_2.9.9.bb
index 5797dd6..1d898ab 100644
--- a/meta/recipes-core/libxml/libxml2_2.9.9.bb
+++ b/meta/recipes-core/libxml/libxml2_2.9.9.bb
@@ -22,6 +22,7 @@ SRC_URI = "http://www.xmlsoft.org/sources/libxml2-${PV}.tar.gz;name=libtar \
file://fix-execution-of-ptests.patch \
file://Fix-CVE-2019-19956.patch \
file://CVE-2020-7595.patch \
+ file://CVE-2019-20388.patch \
"
SRC_URI[libtar.md5sum] = "c04a5a0a042eaa157e8e8c9eabe76bd6"
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