This patch addresses two heap overflow bugs in raptor2:

http://seclists.org/oss-sec/2017/q2/424

Patch copied from libreoffice:

https://github.com/LibreOffice/core/blob/master/external/redland/raptor/0001-Calcualte-max-nspace-declarations-correctly-for-XML-.patch.1

From 590681e546cd9aa18d57dc2ea1858cb734a3863f Mon Sep 17 00:00:00 2001
From: Dave Beckett <dave@dajobe.org>
Date: Sun, 16 Apr 2017 23:15:12 +0100
Subject: [PATCH] Calcualte max nspace declarations correctly for XML writer

(raptor_xml_writer_start_element_common): Calculate max including for
each attribute a potential name and value.

Fixes Issues #0000617 http://bugs.librdf.org/mantis/view.php?id=617
and #0000618 http://bugs.librdf.org/mantis/view.php?id=618
---
 src/raptor_xml_writer.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/raptor_xml_writer.c b/src/raptor_xml_writer.c
index 693b946..0d3a36a 100644
--- a/src/raptor_xml_writer.c
+++ b/src/raptor_xml_writer.c
@@ -181,9 +181,10 @@ raptor_xml_writer_start_element_common(raptor_xml_writer* xml_writer,
   size_t nspace_declarations_count = 0;  
   unsigned int i;
 
-  /* max is 1 per element and 1 for each attribute + size of declared */
   if(nstack) {
-    int nspace_max_count = element->attribute_count+1;
+    int nspace_max_count = element->attribute_count * 2; /* attr and value */
+    if(element->name->nspace)
+      nspace_max_count++;
     if(element->declared_nspaces)
       nspace_max_count += raptor_sequence_size(element->declared_nspaces);
     if(element->xml_language)
@@ -237,7 +238,7 @@ raptor_xml_writer_start_element_common(raptor_xml_writer* xml_writer,
         }
       }
 
-      /* Add the attribute + value */
+      /* Add the attribute's value */
       nspace_declarations[nspace_declarations_count].declaration=
         raptor_qname_format_as_xml(element->attributes[i],
                                    &nspace_declarations[nspace_declarations_count].length);
-- 
2.9.3

elect>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=93e19067b4428e41c281eebe19746ea253591aad&amp;showmsg=1'>root</a>/<a href='/guix/log/gnu?id=93e19067b4428e41c281eebe19746ea253591aad&amp;showmsg=1'>gnu</a>/<a href='/guix/log/gnu/packages?id=93e19067b4428e41c281eebe19746ea253591aad&amp;showmsg=1'>packages</a>/<a href='/guix/log/gnu/packages/sdl.scm?id=93e19067b4428e41c281eebe19746ea253591aad&amp;showmsg=1'>sdl.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/sdl.scm?id=93e19067b4428e41c281eebe19746ea253591aad'>Collapse</a>)</th><th class='left'>Author</th></tr>
<tr class='logheader'><td><span title='2024-07-18 11:21:34 +0100'>2024-07-18</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/sdl.scm?id=843b85c42745d65c93d6af81cd3a9d835ff1f51c'>gnu: sdl2-gamecontrollerdb: Update to 0-1.9d09945.</a></td><td>Evgeny Pisemsky</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/sdl.scm (sdl2-gamecontrollerdb): Update to 0-1.9d09945.

Change-Id: I593fdac1ae4c8e439e2b29eab5880a6acdde80bc
Signed-off-by: Christopher Baines &lt;mail@cbaines.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2024-03-31 20:47:19 -0400'>2024-03-31</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/sdl.scm?id=f7c259b2659cbd752ce5e1bcd2c2d66188295967'>gnu: sdl2: Update to 2.30.1.</a></td><td>dan</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/sdl.scm (sdl2): Update to 2.30.1.

Change-Id: I0417cfaa0af55df63f731efad420de9f2b81a3d9
Signed-off-by: John Kehayias &lt;john.kehayias@protonmail.com&gt;


</td></tr>
<tr class='logheader'><td><span title='2023-11-05 22:11:30 -0500'>2023-11-05</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/sdl.scm?id=97f292b47f70c4744e374494cbe248ddcb139082'>gnu: sdl2: Update to 2.28.5.</a></td><td>John Kehayias</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/sdl.scm (sdl2): Update to 2.28.5.

Change-Id: I853776bf82e84499486d32012a9b3a4636226668


</td></tr>
<tr class='logheader'><td><span title='2023-11-05 22:09:53 -0500'>2023-11-05</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/sdl.scm?id=50521348c89140705ca157a7d77f4acda24c26c7'>gnu: sdl2: Add vulkan-loader to rpath.</a></td><td>dan</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/sdl.scm (sdl2)[arguments]: Append the path of libvulkan.so to
rpath.
[inputs]: Add vulkan-loader.

Signed-off-by: John Kehayias &lt;john.kehayias@protonmail.com&gt;
Change-Id: I17c8388f5f7b3bb063b79fd4981263994da129c0


</td></tr>
<tr class='logheader'><td><span title='2023-10-27 16:33:33 +0200'>2023-10-27</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/sdl.scm?id=2ff8de3657a5c9d0abf67bb4705251b23d97702e'>gnu: Add sdl2-gamecontrollerdb.</a></td><td>Evgeny Pisemsky</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/sdl.scm (sdl2-gamecontrollerdb): New variable.


</td></tr>