1 files changed, 74 insertions, 0 deletions
diff --git a/editors/calligra/files/patch-koffce-xpdf-CVE-2007-0104.diff b/editors/calligra/files/patch-koffce-xpdf-CVE-2007-0104.diff
new file mode 100644
index 000000000000..f5e51a1c706e
--- /dev/null
+++ b/editors/calligra/files/patch-koffce-xpdf-CVE-2007-0104.diff
@@ -0,0 +1,74 @@
+------------------------------------------------------------------------
+r622463 | aacid | 2007-01-11 23:05:54 +0100 (Thu, 11 Jan 2007) | 2 lines
+Changed paths:
+   M /branches/koffice/1.6/koffice/filters/kword/pdf/xpdf/xpdf/Catalog.cc
+   M /branches/koffice/1.6/koffice/filters/kword/pdf/xpdf/xpdf/Catalog.h
+
+Commiting the patch agreed between kpdf and poppler developers to fix MOAB-06-01-2007 issue.
+
+------------------------------------------------------------------------
+Index: filters/kword/pdf/xpdf/xpdf/Catalog.cc
+===================================================================
+--- filters/kword/pdf/xpdf/xpdf/Catalog.cc	(revision 622462)
++++ filters/kword/pdf/xpdf/xpdf/Catalog.cc	(revision 622463)
+@@ -24,6 +24,12 @@
+ #include "Link.h"
+ #include "Catalog.h"
+ 
++// This define is used to limit the depth of recursive readPageTree calls
++// This is needed because the page tree nodes can reference their parents
++// leaving us in an infinite loop
++// Most sane pdf documents don't have a call depth higher than 10
++#define MAX_CALL_DEPTH 1000
++
+ //------------------------------------------------------------------------
+ // Catalog
+ //------------------------------------------------------------------------
+@@ -77,7 +83,7 @@ Catalog::Catalog(XRef *xrefA) {
+     pageRefs[i].num = -1;
+     pageRefs[i].gen = -1;
+   }
+-  numPages = readPageTree(pagesDict.getDict(), NULL, 0);
++  numPages = readPageTree(pagesDict.getDict(), NULL, 0, 0);
+   if (numPages != numPages0) {
+     error(-1, "Page count in top-level pages object is incorrect");
+   }
+@@ -171,7 +177,7 @@ GString *Catalog::readMetadata() {
+   return s;
+ }
+ 
+-int Catalog::readPageTree(Dict *pagesDict, PageAttrs *attrs, int start) {
++int Catalog::readPageTree(Dict *pagesDict, PageAttrs *attrs, int start, int callDepth) {
+   Object kids;
+   Object kid;
+   Object kidRef;
+@@ -221,9 +227,13 @@ int Catalog::readPageTree(Dict *pagesDic
+     // This should really be isDict("Pages"), but I've seen at least one
+     // PDF file where the /Type entry is missing.
+     } else if (kid.isDict()) {
+-      if ((start = readPageTree(kid.getDict(), attrs1, start))
+-	  < 0)
+-	goto err2;
++      if (callDepth > MAX_CALL_DEPTH) {
++        error(-1, "Limit of %d recursive calls reached while reading the page tree. If your document is correct and not a test to try to force a crash, please report a bug.", MAX_CALL_DEPTH);
++      } else {
++        if ((start = readPageTree(kid.getDict(), attrs1, start, callDepth + 1))
++	    < 0)
++	  goto err2;
++      }
+     } else {
+       error(-1, "Kid object (page %d) is wrong type (%s)",
+ 	    start+1, kid.getTypeName());
+Index: filters/kword/pdf/xpdf/xpdf/Catalog.h
+===================================================================
+--- filters/kword/pdf/xpdf/xpdf/Catalog.h	(revision 622462)
++++ filters/kword/pdf/xpdf/xpdf/Catalog.h	(revision 622463)
+@@ -82,7 +82,7 @@ private:
+   Object outline;		// outline dictionary
+   GBool ok;			// true if catalog is valid
+ 
+-  int readPageTree(Dict *pages, PageAttrs *attrs, int start);
++  int readPageTree(Dict *pages, PageAttrs *attrs, int start, int callDepth);
+   Object *findDestInTree(Object *tree, GString *name, Object *obj);
+ };
+