new file mode 100644
@@ -0,0 +1,79 @@
+From e4f85f1bd2eb34d9b49da9154a4cc3a1bc284f68 Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Fri, 7 Apr 2023 11:46:35 +0200
+Subject: [PATCH] [CVE-2023-28484] Fix null deref in xmlSchemaFixupComplexType
+
+Fix a null pointer dereference when parsing (invalid) XML schemas.
+
+Thanks to Robby Simpson for the report!
+
+Fixes #491.
+
+CVE: CVE-2023-28484
+Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/libxml2/-/commit/e4f85f1bd2eb34d9b49da9154a4cc3a1bc284f68]
+
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ result/schemas/issue491_0_0.err | 1 +
+ test/schemas/issue491_0.xml | 1 +
+ test/schemas/issue491_0.xsd | 18 ++++++++++++++++++
+ xmlschemas.c | 2 +-
+ 4 files changed, 21 insertions(+), 1 deletion(-)
+ create mode 100644 result/schemas/issue491_0_0.err
+ create mode 100644 test/schemas/issue491_0.xml
+ create mode 100644 test/schemas/issue491_0.xsd
+
+diff --git a/result/schemas/issue491_0_0.err b/result/schemas/issue491_0_0.err
+new file mode 100644
+index 00000000..9b2bb969
+--- /dev/null
++++ b/result/schemas/issue491_0_0.err
+@@ -0,0 +1 @@
++./test/schemas/issue491_0.xsd:8: element complexType: Schemas parser error : complex type 'ChildType': The content type of both, the type and its base type, must either 'mixed' or 'element-only'.
+diff --git a/test/schemas/issue491_0.xml b/test/schemas/issue491_0.xml
+new file mode 100644
+index 00000000..e2b2fc2e
+--- /dev/null
++++ b/test/schemas/issue491_0.xml
+@@ -0,0 +1 @@
++<Child xmlns="http://www.test.com">5</Child>
+diff --git a/test/schemas/issue491_0.xsd b/test/schemas/issue491_0.xsd
+new file mode 100644
+index 00000000..81702649
+--- /dev/null
++++ b/test/schemas/issue491_0.xsd
+@@ -0,0 +1,18 @@
++<?xml version='1.0' encoding='UTF-8'?>
++<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://www.test.com" targetNamespace="http://www.test.com" elementFormDefault="qualified" attributeFormDefault="unqualified">
++ <xs:complexType name="BaseType">
++ <xs:simpleContent>
++ <xs:extension base="xs:int" />
++ </xs:simpleContent>
++ </xs:complexType>
++ <xs:complexType name="ChildType">
++ <xs:complexContent>
++ <xs:extension base="BaseType">
++ <xs:sequence>
++ <xs:element name="bad" type="xs:int" minOccurs="0" maxOccurs="1"/>
++ </xs:sequence>
++ </xs:extension>
++ </xs:complexContent>
++ </xs:complexType>
++ <xs:element name="Child" type="ChildType" />
++</xs:schema>
+diff --git a/xmlschemas.c b/xmlschemas.c
+index 6a353858..a4eaf591 100644
+--- a/xmlschemas.c
++++ b/xmlschemas.c
+@@ -18632,7 +18632,7 @@ xmlSchemaFixupComplexType(xmlSchemaParserCtxtPtr pctxt,
+ "allowed to appear inside other model groups",
+ NULL, NULL);
+
+- } else if (! dummySequence) {
++ } else if ((!dummySequence) && (baseType->subtypes != NULL)) {
+ xmlSchemaTreeItemPtr effectiveContent =
+ (xmlSchemaTreeItemPtr) type->subtypes;
+ /*
+--
+GitLab
+
new file mode 100644
@@ -0,0 +1,42 @@
+From 547edbf1cbdccd46b2e8ff322a456eaa5931c5df Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Fri, 7 Apr 2023 11:49:27 +0200
+Subject: [PATCH] [CVE-2023-29469] Hashing of empty dict strings isn't
+ deterministic
+
+When hashing empty strings which aren't null-terminated,
+xmlDictComputeFastKey could produce inconsistent results. This could
+lead to various logic or memory errors, including double frees.
+
+For consistency the seed is also taken into account, but this shouldn't
+have an impact on security.
+
+Found by OSS-Fuzz.
+
+Fixes #510.
+
+CVE: CVE-2023-29469
+Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/libxml2/-/commit/547edbf1cbdccd46b2e8ff322a456eaa5931c5df]
+
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ dict.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/dict.c b/dict.c
+index 86c3f6d7..d7fd1a06 100644
+--- a/dict.c
++++ b/dict.c
+@@ -451,7 +451,8 @@ static unsigned long
+ xmlDictComputeFastKey(const xmlChar *name, int namelen, int seed) {
+ unsigned long value = seed;
+
+- if (name == NULL) return(0);
++ if ((name == NULL) || (namelen <= 0))
++ return(value);
+ value = *name;
+ value <<= 5;
+ if (namelen > 10) {
+--
+GitLab
+
@@ -36,6 +36,8 @@ SRC_URI += "http://www.w3.org/XML/Test/xmlts20080827.tar.gz;subdir=${BP};name=te
file://CVE-2016-3709.patch \
file://CVE-2022-40303.patch \
file://CVE-2022-40304.patch \
+ file://CVE-2023-28484.patch \
+ file://CVE-2023-29469.patch \
"
SRC_URI[archive.sha256sum] = "593b7b751dd18c2d6abcd0c4bcb29efc203d0b4373a6df98e3a455ea74ae2813"