GraphicsMagick: MogrifyImage(): Validate the number of -random-t...

changeset 91f43cb66057 in /hg/GraphicsMagick
details: http://hg.GraphicsMagick.org/hg/GraphicsMagick?cmd=changeset;node=91f43cb66057
summary: MogrifyImage(): Validate the number of -random-threshold arguments

diffstat:

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

diffs (29 lines):

diff -r 23656d0d72cb -r 91f43cb66057 ChangeLog
--- a/ChangeLog	Fri Jun 02 19:51:34 2023 -0500
+++ b/ChangeLog	Fri Jun 02 20:10:13 2023 -0500
@@ -1,5 +1,10 @@
 2023-06-02  Bob Friesenhahn  <[email protected]>
 
+	* magick/command.c (MogrifyImage): Validate the number of
+	-random-threshold arguments.  Addresses SourceForge issue #700
+	Segmentation Violation in gm (magick/utility.c:3399 in
+	LocaleCompare)".
+
 	* magick/montage.c (MontageImages): Report exception if tile
 	geometry component is zero. Addresses SourceForge issue #699
 	"Floating Point Exception in gm (magick/montage.c:514 in
diff -r 23656d0d72cb -r 91f43cb66057 magick/command.c
--- a/magick/command.c	Fri Jun 02 19:51:34 2023 -0500
+++ b/magick/command.c	Fri Jun 02 20:10:13 2023 -0500
@@ -10670,6 +10670,11 @@
             /*
               Threshold image.
             */
+            if (i+2 > argc)
+              {
+                ThrowException(&(*image)->exception,OptionError,MissingArgument,option+1);
+                break;
+              }
             (void) RandomChannelThresholdImage(*image,argv[i+1],argv[i+2],
                 &(*image)->exception);
             i+=2;