Buffer overflow in the TIFF reader in gui/image/qtiffhandler.cpp in Qt
4.7.4 allows remote attackers to cause a denial of service (crash) and
possibly execute arbitrary code via the TIFFTAG_SAMPLESPERPIXEL tag in
a greyscale TIFF image with multiple samples per pixel.
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MLIST:[oss-security] 20120822 CVE request: libqt4: two memory issues
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