[OE-core][scarthgap][PATCH 5/6] libxml2: Security Fix for CVE-2026-86141

[Siddharth <sdoshi@mvista.com>]

From: Siddharth Doshi <sdoshi@mvista.com>

Picking patch as per [1], and same patch is mentioned in [2]

References:
[1] https://nvd.nist.gov/vuln/detail/CVE-2026-86141
[2] https://security-tracker.debian.org/tracker/CVE-2026-86141

Signed-off-by: Siddharth Doshi <sdoshi@mvista.com>
---
 .../libxml/libxml2/CVE-2026-86141.patch       | 36 +++++++++++++++++++
 meta/recipes-core/libxml/libxml2_2.12.10.bb   |  1 +
 2 files changed, 37 insertions(+)
 create mode 100644 meta/recipes-core/libxml/libxml2/CVE-2026-86141.patch

diff --git a/meta/recipes-core/libxml/libxml2/CVE-2026-86141.patch b/meta/recipes-core/libxml/libxml2/CVE-2026-86141.patch
new file mode 100644
index 0000000000..cea31d8d14
--- /dev/null
+++ b/meta/recipes-core/libxml/libxml2/CVE-2026-86141.patch
@@ -0,0 +1,36 @@
+From e89a8aae4c9b40cdafcf66b3f9e57c62db37bb55 Mon Sep 17 00:00:00 2001
+From: Daniel Garcia Moreno <daniel.garcia@suse.com>
+Date: Mon, 4 May 2026 07:56:18 +0200
+Subject: [PATCH] xmlregexp: Calc string length after null checking
+
+Fix https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1107
+
+Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/libxml2/-/commit/e89a8aae4c9b40cdafcf66b3f9e57c62db37bb55]
+CVE: CVE-2026-86141
+Signed-off-by: Siddharth Doshi <sdoshi@mvista.com>
+---
+ xmlregexp.c | 8 ++++++--
+ 1 file changed, 6 insertions(+), 2 deletions(-)
+
+diff --git a/xmlregexp.c b/xmlregexp.c
+index 5e15311..1c1b25e 100644
+--- a/xmlregexp.c
++++ b/xmlregexp.c
+@@ -702,8 +702,12 @@ xmlRegNewParserCtxt(const xmlChar *string) {
+ 	return(NULL);
+     memset(ret, 0, sizeof(xmlRegParserCtxt));
+     if (string != NULL)
+-	ret->string = xmlStrdup(string);
+-	ret->len = strlen((const char *) ret->string);
++         ret->string = xmlStrdup(string);
++         if (ret->string == NULL) {
++             xmlFree(ret);
++             return(NULL);
++         }
++        ret->len = strlen((const char *) ret->string);
+     ret->cur = ret->string;
+     ret->neg = 0;
+     ret->negs = 0;
+-- 
+2.34.1
+
diff --git a/meta/recipes-core/libxml/libxml2_2.12.10.bb b/meta/recipes-core/libxml/libxml2_2.12.10.bb
index b3f6a482d2..2869aa46ac 100644
--- a/meta/recipes-core/libxml/libxml2_2.12.10.bb
+++ b/meta/recipes-core/libxml/libxml2_2.12.10.bb
@@ -35,6 +35,7 @@ SRC_URI += "http://www.w3.org/XML/Test/xmlts20130923.tar;subdir=${BP};name=testt
            file://CVE-2026-86137.patch \
            file://CVE-2026-86138.patch \
            file://CVE-2026-86140.patch \
+           file://CVE-2026-86141.patch \
            "
 
 SRC_URI[archive.sha256sum] = "c3d8c0c34aa39098f66576fe51969db12a5100b956233dc56506f7a8679be995"
-- 
2.34.1