GraphicsMagick: coders/mat.c Prevent against geometry injection.

changeset 6a6ef48daf48 in /hg/GraphicsMagick
details: http://hg.GraphicsMagick.org/hg/GraphicsMagick?cmd=changeset;node=6a6ef48daf48
summary: coders/mat.c Prevent against geometry injection.

diffstat:

 ChangeLog    |  5 +++++
 coders/mat.c |  5 +++++
 2 files changed, 10 insertions(+), 0 deletions(-)

diffs (34 lines):

diff -r 417128e5beef -r 6a6ef48daf48 ChangeLog
--- a/ChangeLog	Tue Nov 07 01:26:30 2023 +0100
+++ b/ChangeLog	Tue Nov 07 01:39:11 2023 +0100
@@ -1,3 +1,8 @@
+2023-11-07  Bob Friesenhahn  <[email protected]>
+
+	* coders/wpg.c Revert
+	* coders/mat.c Prevent against geometry injection.
+
 2023-11-06  Bob Friesenhahn  <[email protected]>
 
 	* coders/wpg.c (ExtractPostscript): Restore previous
diff -r 417128e5beef -r 6a6ef48daf48 coders/mat.c
--- a/coders/mat.c	Tue Nov 07 01:26:30 2023 +0100
+++ b/coders/mat.c	Tue Nov 07 01:39:11 2023 +0100
@@ -435,6 +435,9 @@
 
   if((clone_info->file=fopen(clone_info->filename,"rb"))==NULL) goto UnlinkFile;
   if((image2 = AllocateImage(clone_info))==NULL) goto EraseFile;
+  image2->rows=0;
+  image2->columns=0;
+
   status = OpenBlob(clone_info,image2,ReadBinaryBlobMode,exception);
   if (status == False)
   {
@@ -831,6 +834,8 @@
      Open image file.
    */
   image = AllocateImage(image_info);
+  image->rows=0;
+  image->columns=0;
 
   status = OpenBlob(image_info, image, ReadBinaryBlobMode, exception);
   if (status == False)