libxml2: patch CVE-2025-24928

Pick commit fomr 2.12 branch.

(From OE-Core rev: 3ccd936adb928612c9721768708534350aeee351)

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

2 files changed, 59 insertions, 0 deletions

diff --git a/meta/recipes-core/libxml/libxml2/CVE-2025-24928.patch b/meta/recipes-core/libxml/libxml2/CVE-2025-24928.patch
new file mode 100644
index 0000000000..6da43f81a5
--- /dev/null
+++ b/meta/recipes-core/libxml/libxml2/CVE-2025-24928.patch
@@ -0,0 +1,58 @@
+From 858ca26c0689161a6b903a6682cc8a1cc10a0ea8 Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Tue, 11 Feb 2025 17:30:40 +0100
+Subject: [PATCH] [CVE-2025-24928] Fix stack-buffer-overflow in
+ xmlSnprintfElements
+
+Fixes #847.
+
+CVE: CVE-2025-24928
+Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/libxml2/-/commit/858ca26c0689161a6b903a6682cc8a1cc10a0ea8]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ valid.c | 25 +++++++++++++------------
+ 1 file changed, 13 insertions(+), 12 deletions(-)
+
+diff --git a/valid.c b/valid.c
+index ed3c8503..36a0435b 100644
+--- a/valid.c
++++ b/valid.c
+@@ -5259,25 +5259,26 @@ xmlSnprintfElements(char *buf, int size, xmlNodePtr node, int glob) {
+            return;
+        }
+         switch (cur->type) {
+-            case XML_ELEMENT_NODE:
++            case XML_ELEMENT_NODE: {
++                int qnameLen = xmlStrlen(cur->name);
++
++                if ((cur->ns != NULL) && (cur->ns->prefix != NULL))
++                    qnameLen += xmlStrlen(cur->ns->prefix) + 1;
++                if (size - len < qnameLen + 10) {
++                    if ((size - len > 4) && (buf[len - 1] != '.'))
++                        strcat(buf, " ...");
++                    return;
++                }
+                if ((cur->ns != NULL) && (cur->ns->prefix != NULL)) {
+-                   if (size - len < xmlStrlen(cur->ns->prefix) + 10) {
+-                       if ((size - len > 4) && (buf[len - 1] != '.'))
+-                           strcat(buf, " ...");
+-                       return;
+-                   }
+                    strcat(buf, (char *) cur->ns->prefix);
+                    strcat(buf, ":");
+                }
+-                if (size - len < xmlStrlen(cur->name) + 10) {
+-                   if ((size - len > 4) && (buf[len - 1] != '.'))
+-                       strcat(buf, " ...");
+-                   return;
+-               }
+-               strcat(buf, (char *) cur->name);
++                if (cur->name != NULL)
++                   strcat(buf, (char *) cur->name);
+                if (cur->next != NULL)
+                    strcat(buf, " ");
+                break;
++            }
+             case XML_TEXT_NODE:
+                if (xmlIsBlankNode(cur))
+                    break;
diff --git a/meta/recipes-core/libxml/libxml2_2.9.14.bb b/meta/recipes-core/libxml/libxml2_2.9.14.bb
index e9578ceb59..8f1d882505 100644
--- a/meta/recipes-core/libxml/libxml2_2.9.14.bb
+++ b/meta/recipes-core/libxml/libxml2_2.9.14.bb
@@ -36,6 +36,7 @@ SRC_URI += "http://www.w3.org/XML/Test/xmlts20080827.tar;subdir=${BP};name=testt
            file://CVE-2022-49043.patch \
            file://0001-pattern-Fix-compilation-of-explicit-child-axis.patch \
            file://CVE-2024-56171.patch \
+           file://CVE-2025-24928.patch \
            "
 
 SRC_URI[archive.sha256sum] = "60d74a257d1ccec0475e749cba2f21559e48139efba6ff28224357c7c798dfee"