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http://hg.code.sf.net/p/graphicsmagick/code/rev/358608a46f0a
http://www.openwall.com/lists/oss-security/2017/09/22/2
Some changes were made to make the patch apply.
Notably, the DestroyJNG() function in the upstream diff has been replaced by
its equivalent, a series of calls to MagickFreeMemory(), DestroyImageInfo(),
and DestroyImage(). See
http://hg.code.sf.net/p/graphicsmagick/code/rev/d445af60a8d5.
# HG changeset patch
# User Glenn Randers-Pehrson <glennrp+bmo@gmail.com>
# Date 1504014487 14400
# Node ID 358608a46f0a9c55e9bb8b37d09bf1ac9bc87f06
# Parent 38c362f0ae5e7a914c3fe822284c6953f8e6eee2
Fix Issue 439
diff -ru a/coders/png.c b/coders/png.c
--- a/coders/png.c 1969-12-31 19:00:00.000000000 -0500
+++ b/coders/png.c 2017-09-30 08:20:16.218944991 -0400
@@ -1176,15 +1176,15 @@
/* allocate space */
if (length == 0)
{
- (void) ThrowException2(&image->exception,CoderWarning,
- "invalid profile length",(char *) NULL);
+ (void) LogMagickEvent(CoderEvent,GetMagickModule(),
+ "invalid profile length");
return (MagickFail);
}
info=MagickAllocateMemory(unsigned char *,length);
if (info == (unsigned char *) NULL)
{
- (void) ThrowException2(&image->exception,CoderWarning,
- "unable to copy profile",(char *) NULL);
+ (void) LogMagickEvent(CoderEvent,GetMagickModule(),
+ "Unable to copy profile");
return (MagickFail);
}
/* copy profile, skipping white space and column 1 "=" signs */
@@ -1197,8 +1197,8 @@
if (*sp == '\0')
{
MagickFreeMemory(info);
- (void) ThrowException2(&image->exception,CoderWarning,
- "ran out of profile data",(char *) NULL);
+ (void) LogMagickEvent(CoderEvent,GetMagickModule(),
+ "ran out of profile data");
return (MagickFail);
}
sp++;
@@ -1234,8 +1234,9 @@
if(SetImageProfile(image,profile_name,info,length) == MagickFail)
{
MagickFreeMemory(info);
- (void) ThrowException(&image->exception,ResourceLimitError,
- MemoryAllocationFailed,"unable to copy profile");
+ (void) LogMagickEvent(CoderEvent,GetMagickModule(),
+ "unable to copy profile");
+ return MagickFail;
}
MagickFreeMemory(info);
return MagickTrue;
@@ -3285,7 +3286,6 @@
if (status == MagickFalse)
{
DestroyJNGInfo(color_image_info,alpha_image_info);
- DestroyImage(alpha_image);
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
" could not allocate alpha_image blob");
return ((Image *)NULL);
@@ -3534,7 +3534,7 @@
CloseBlob(color_image);
if (logging)
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
- " Reading jng_image from color_blob.");
+ " Reading jng_image from color_blob.");
FormatString(color_image_info->filename,"%.1024s",color_image->filename);
@@ -3558,13 +3558,18 @@
if (logging)
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
- " Copying jng_image pixels to main image.");
+ " Copying jng_image pixels to main image.");
image->rows=jng_height;
image->columns=jng_width;
length=image->columns*sizeof(PixelPacket);
+ if ((jng_height == 0 || jng_width == 0) && logging)
+ (void) LogMagickEvent(CoderEvent,GetMagickModule(),
+ " jng_width=%lu jng_height=%lu",
+ (unsigned long)jng_width,(unsigned long)jng_height);
for (y=0; y < (long) image->rows; y++)
{
- s=AcquireImagePixels(jng_image,0,y,image->columns,1,&image->exception);
+ s=AcquireImagePixels(jng_image,0,y,image->columns,1,
+ &image->exception);
q=SetImagePixels(image,0,y,image->columns,1);
(void) memcpy(q,s,length);
if (!SyncImagePixels(image))
@@ -3589,45 +3594,79 @@
CloseBlob(alpha_image);
if (logging)
(void) LogMagickEvent(CoderEvent,GetMagickModule(),
- " Reading opacity from alpha_blob.");
+ " Reading opacity from alpha_blob.");
FormatString(alpha_image_info->filename,"%.1024s",
alpha_image->filename);
jng_image=ReadImage(alpha_image_info,exception);
- for (y=0; y < (long) image->rows; y++)
+ if (jng_image == (Image *)NULL)
{
- s=AcquireImagePixels(jng_image,0,y,image->columns,1,
- &image->exception);
- if (image->matte)
- {
- q=SetImagePixels(image,0,y,image->columns,1);
- for (x=(long) image->columns; x > 0; x--,q++,s++)
- q->opacity=(Quantum) MaxRGB-s->red;
- }
- else
+ (void) LogMagickEvent(CoderEvent,GetMagickModule(),
+ " jng_image is NULL.");
+ if (color_image_info)
+ DestroyImageInfo(color_image_info);
+ if (alpha_image_info)
+ DestroyImageInfo(alpha_image_info);
+ if (color_image)
+ DestroyImage(color_image);
+ if (alpha_image)
+ DestroyImage(alpha_image);
+ }
+ else
+ {
+
+ if (logging)
{
- q=SetImagePixels(image,0,y,image->columns,1);
- for (x=(long) image->columns; x > 0; x--,q++,s++)
- {
- q->opacity=(Quantum) MaxRGB-s->red;
- if (q->opacity != OpaqueOpacity)
- image->matte=MagickTrue;
- }
+ (void) LogMagickEvent(CoderEvent,GetMagickModule(),
+ " Read jng_image.");
+ (void) LogMagickEvent(CoderEvent,GetMagickModule(),
+ " jng_image->width=%lu, jng_image->height=%lu",
+ (unsigned long)jng_width,(unsigned long)jng_height);
+ (void) LogMagickEvent(CoderEvent,GetMagickModule(),
+ " image->rows=%lu, image->columns=%lu",
+ (unsigned long)image->rows,
+ (unsigned long)image->columns);
}
- if (!SyncImagePixels(image))
- break;
- }
- (void) LiberateUniqueFileResource(alpha_image->filename);
- DestroyImage(alpha_image);
- alpha_image = (Image *)NULL;
- DestroyImageInfo(alpha_image_info);
- alpha_image_info = (ImageInfo *)NULL;
- (void) LogMagickEvent(CoderEvent,GetMagickModule(),
- " Destroy the JNG image");
- DestroyImage(jng_image);
- jng_image = (Image *)NULL;
+
+ for (y=0; y < (long) image->rows; y++)
+ {
+ s=AcquireImagePixels(jng_image,0,y,image->columns,1,
+ &image->exception);
+ if (image->matte)
+ {
+ q=SetImagePixels(image,0,y,image->columns,1);
+ for (x=(long) image->columns; x > 0; x--,q++,s++)
+ q->opacity=(Quantum) MaxRGB-s->red;
+ }
+ else
+ {
+ q=SetImagePixels(image,0,y,image->columns,1);
+ for (x=(long) image->columns; x > 0; x--,q++,s++)
+ {
+ q->opacity=(Quantum) MaxRGB-s->red;
+ if (q->opacity != OpaqueOpacity)
+ image->matte=MagickTrue;
+ }
+ }
+ if (!SyncImagePixels(image))
+ break;
+ }
+ (void) LiberateUniqueFileResource(alpha_image->filename);
+ if (color_image_info)
+ DestroyImageInfo(color_image_info);
+ if (alpha_image_info)
+ DestroyImageInfo(alpha_image_info);
+ if (color_image)
+ DestroyImage(color_image);
+ if (alpha_image)
+ DestroyImage(alpha_image);
+ (void) LogMagickEvent(CoderEvent,GetMagickModule(),
+ " Destroy the JNG image");
+ DestroyImage(jng_image);
+ jng_image = (Image *)NULL;
+ }
}
}