2 files changed, 43 insertions, 0 deletions

diff --git a/meta/recipes-core/libxml/libxml2/CVE-2024-56171.patch b/meta/recipes-core/libxml/libxml2/CVE-2024-56171.patch
new file mode 100644
index 0000000000..6c7b1c11e7
--- /dev/null
+++ b/meta/recipes-core/libxml/libxml2/CVE-2024-56171.patch
@@ -0,0 +1,42 @@
+From 245b70d7d2768572ae1b05b3668ca858b9ec4ed4 Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Tue, 10 Dec 2024 16:52:05 +0100
+Subject: [PATCH] [CVE-2024-56171] Fix use-after-free after
+ xmlSchemaItemListAdd
+
+xmlSchemaItemListAdd can reallocate the items array. Update local
+variables after adding item in
+
+- xmlSchemaIDCFillNodeTables
+- xmlSchemaBubbleIDCNodeTables
+
+Fixes #828.
+
+CVE: CVE-2024-56171
+Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/libxml2/-/commit/245b70d7d2768572ae1b05b3668ca858b9ec4ed4]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ xmlschemas.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/xmlschemas.c b/xmlschemas.c
+index a089ebc5..18e35e75 100644
+--- a/xmlschemas.c
++++ b/xmlschemas.c
+@@ -23647,6 +23647,7 @@ xmlSchemaIDCFillNodeTables(xmlSchemaValidCtxtPtr vctxt,
+                        }
+                        if (xmlSchemaItemListAdd(bind->dupls, bind->nodeTable[j]) == -1)
+                            goto internal_error;
++                        dupls = (xmlSchemaPSVIIDCNodePtr *) bind->dupls->items;
+                        /*
+                        * Remove the duplicate entry from the IDC node-table.
+                        */
+@@ -23863,6 +23864,8 @@ xmlSchemaBubbleIDCNodeTables(xmlSchemaValidCtxtPtr vctxt)
+                                goto internal_error;
+                        }
+                        xmlSchemaItemListAdd(parBind->dupls, parNode);
++                       dupls = (xmlSchemaPSVIIDCNodePtr *)
++                            parBind->dupls->items;
+                    } else {
+                        /*
+                        * Add the node-table entry (node and key-sequence) of
diff --git a/meta/recipes-core/libxml/libxml2_2.9.14.bb b/meta/recipes-core/libxml/libxml2_2.9.14.bb
index 912bcfd0f3..e9578ceb59 100644
--- a/meta/recipes-core/libxml/libxml2_2.9.14.bb
+++ b/meta/recipes-core/libxml/libxml2_2.9.14.bb
@@ -35,6 +35,7 @@ SRC_URI += "http://www.w3.org/XML/Test/xmlts20080827.tar;subdir=${BP};name=testt
            file://CVE-2024-34459.patch \
            file://CVE-2022-49043.patch \
            file://0001-pattern-Fix-compilation-of-explicit-child-axis.patch \
+           file://CVE-2024-56171.patch \
            "
 
 SRC_URI[archive.sha256sum] = "60d74a257d1ccec0475e749cba2f21559e48139efba6ff28224357c7c798dfee"