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Added checks for invalid with or height to ThumbnailImage (https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-fh55-q5pj-pxgw)

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This commit is contained in:
Dirk Lemstra
2025-08-14 21:21:59 +02:00
parent 50991bb300
commit 43d92bf855
1 changed files with 2 additions and 0 deletions
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MagickCore/resize.c
+2
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@@ -4613,6 +4613,8 @@ MagickExport Image *ThumbnailImage(const Image *image,const size_t columns,
assert(exception->signature == MagickCoreSignature);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
if ((columns == 0) || (rows == 0))
ThrowImageException(ImageError,"NegativeOrZeroImageSize");
thumbnail_image=CloneImage(image,0,0,MagickTrue,exception);
if (thumbnail_image == (Image *) NULL)
return(thumbnail_image);