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ImageMagick
ImageMagick-6.2.5-overflow-sgi-CVE-2006-5868.patch
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File ImageMagick-6.2.5-overflow-sgi-CVE-2006-5868.patch of Package ImageMagick
--- coders/sgi.c +++ coders/sgi.c @@ -172,13 +172,13 @@ q=pixels; if (bytes_per_pixel == 2) { - for (i=0; i < (long) width; ) + for ( i=0 ; ; ) { pixel=(unsigned long) (*p++) << 8; pixel|=(*p++); count=(ssize_t) (pixel & 0x7f); i+=count; - if (count == 0) + if (count == 0 || i > (long) width) break; if ((pixel & 0x80) != 0) for ( ; count != 0; count--) @@ -201,13 +201,13 @@ } return; } - for (i=0; i < (long) width; ) + for ( i=0 ; ; ) { pixel=(unsigned long) (*p++); count=(ssize_t) (pixel & 0x7f); - if (count == 0) - break; i+=count; + if (count == 0 || i > (long) width) + break; if ((pixel & 0x80) != 0) for ( ; count != 0; count--) { @@ -305,6 +305,8 @@ image->columns=iris_info.columns; image->rows=iris_info.rows; image->depth=(unsigned long) (iris_info.depth <= 8 ? 8 : QuantumDepth); + if (iris_info.depth > 4 || iris_info.depth == 0) + ThrowReaderException(CorruptImageError,"ImproperImageHeader"); if (iris_info.depth < 3) { image->storage_class=PseudoClass;
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