external/libxslt/UnpackedTarball_libxslt.mk             |    1 
 external/libxslt/gnome-libxslt-bug-139-apple-fix.diff.1 |   99 ++++++++++++++++
 2 files changed, 100 insertions(+)

New commits:
commit 6af7e6f1e55eb13e18ef371910540280ca8fbf31
Author:     Michael Stahl <michael.st...@collabora.com>
AuthorDate: Thu Aug 7 16:50:26 2025 +0200
Commit:     Christian Lohmaier <lohmaier+libreoff...@googlemail.com>
CommitDate: Fri Aug 8 12:02:48 2025 +0200

    libxslt: add patch for CVE-2025-7424
    
    See https://gitlab.gnome.org/GNOME/libxslt/-/issues/139
    
    Change-Id: I68f01dcb6b540ddf3d2e74927ec21c0ca4fc865f
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/189105
    Reviewed-by: Caolán McNamara <caolan.mcnam...@collabora.com>
    Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoff...@gmail.com>
    (cherry picked from commit 0f59405c5b255e80707a550129045c3dadd3c46f)
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/189119
    Reviewed-by: Christian Lohmaier <lohmaier+libreoff...@googlemail.com>
    Tested-by: Jenkins

diff --git a/external/libxslt/UnpackedTarball_libxslt.mk 
b/external/libxslt/UnpackedTarball_libxslt.mk
index edfb266f2f17..06519e74ae4b 100644
--- a/external/libxslt/UnpackedTarball_libxslt.mk
+++ b/external/libxslt/UnpackedTarball_libxslt.mk
@@ -20,6 +20,7 @@ $(eval $(call gb_UnpackedTarball_add_patches,libxslt,\
                external/libxslt/libxslt-msvc-sym.patch.2, \
                external/libxslt/libxslt-msvc.patch.2) \
        external/libxslt/rpath.patch.0 \
+       external/libxslt/gnome-libxslt-bug-139-apple-fix.diff.1 \
 ))
 
 # vim: set noet sw=4 ts=4:
diff --git a/external/libxslt/gnome-libxslt-bug-139-apple-fix.diff.1 
b/external/libxslt/gnome-libxslt-bug-139-apple-fix.diff.1
new file mode 100644
index 000000000000..62a34fa61d39
--- /dev/null
+++ b/external/libxslt/gnome-libxslt-bug-139-apple-fix.diff.1
@@ -0,0 +1,99 @@
+From 345d6826d0eae6f0a962456b8ed6f6a1bad0877d Mon Sep 17 00:00:00 2001
+From: David Kilzer <ddkil...@apple.com>
+Date: Sat, 24 May 2025 15:06:42 -0700
+Subject: [PATCH] libxslt: Type confusion in xmlNode.psvi between stylesheet
+ and source nodes
+
+* libxslt/functions.c:
+(xsltDocumentFunctionLoadDocument):
+- Implement fix suggested by Ivan Fratric.  This copies the xmlDoc,
+  calls xsltCleanupSourceDoc() to remove pvsi fields, then adds the
+  xmlDoc to tctxt->docList.
+- Add error handling for functions that may return NULL.
+* libxslt/transform.c:
+- Remove static keyword so this can be called from
+  xsltDocumentFunctionLoadDocument().
+* libxslt/transformInternals.h: Add.
+(xsltCleanupSourceDoc): Add declaration.
+
+Fixes #139.
+---
+ libxslt/functions.c          | 16 +++++++++++++++-
+ libxslt/transform.c          |  3 ++-
+ libxslt/transformInternals.h |  9 +++++++++
+ 3 files changed, 26 insertions(+), 2 deletions(-)
+ create mode 100644 libxslt/transformInternals.h
+
+diff --git a/libxslt/functions.c b/libxslt/functions.c
+index 72a58dc4..11ec039f 100644
+--- a/libxslt/functions.c
++++ b/libxslt/functions.c
+@@ -34,6 +34,7 @@
+ #include "numbersInternals.h"
+ #include "keys.h"
+ #include "documents.h"
++#include "transformInternals.h"
+ 
+ #ifdef WITH_XSLT_DEBUG
+ #define WITH_XSLT_DEBUG_FUNCTION
+@@ -125,7 +126,20 @@ xsltDocumentFunctionLoadDocument(xmlXPathParserContextPtr 
ctxt,
+           /*
+           * This selects the stylesheet's doc itself.
+           */
+-          doc = tctxt->style->doc;
++          doc = xmlCopyDoc(tctxt->style->doc, 1);
++          if (doc == NULL) {
++              xsltTransformError(tctxt, NULL, NULL,
++                  "document() : failed to copy style doc
");
++              goto out_fragment;
++          }
++          xsltCleanupSourceDoc(doc); /* Remove psvi fields. */
++          idoc = xsltNewDocument(tctxt, doc);
++          if (idoc == NULL) {
++              xsltTransformError(tctxt, NULL, NULL,
++                  "document() : failed to create xsltDocument
");
++              xmlFreeDoc(doc);
++              goto out_fragment;
++          }
+       } else {
+             goto out_fragment;
+       }
+diff --git a/libxslt/transform.c b/libxslt/transform.c
+index 54ef821b..38c2dce6 100644
+--- a/libxslt/transform.c
++++ b/libxslt/transform.c
+@@ -43,6 +43,7 @@
+ #include "xsltlocale.h"
+ #include "pattern.h"
+ #include "transform.h"
++#include "transformInternals.h"
+ #include "variables.h"
+ #include "numbersInternals.h"
+ #include "namespaces.h"
+@@ -5757,7 +5758,7 @@ xsltCountKeys(xsltTransformContextPtr ctxt)
+  *
+  * Resets source node flags and ids stored in 'psvi' member.
+  */
+-static void
++void
+ xsltCleanupSourceDoc(xmlDocPtr doc) {
+     xmlNodePtr cur = (xmlNodePtr) doc;
+     void **psviPtr;
+diff --git a/libxslt/transformInternals.h b/libxslt/transformInternals.h
+new file mode 100644
+index 00000000..d0f42823
+--- /dev/null
++++ b/libxslt/transformInternals.h
+@@ -0,0 +1,9 @@
++/*
++ * Summary: set of internal interfaces for the XSLT engine transformation 
part.
++ *
++ * Copy: See Copyright for the status of this software.
++ *
++ * Author: David Kilzer <ddkil...@apple.com>
++ */
++
++void xsltCleanupSourceDoc(xmlDocPtr doc);
+-- 
+2.39.5 (Apple Git-154)
+

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