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tiff.24921
tiff-CVE-2022-0561.patch
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File tiff-CVE-2022-0561.patch of Package tiff.24921
Index: tiff-4.0.9/libtiff/tif_dirread.c =================================================================== --- tiff-4.0.9.orig/libtiff/tif_dirread.c +++ tiff-4.0.9/libtiff/tif_dirread.c @@ -5633,8 +5633,9 @@ TIFFFetchStripThing(TIFF* tif, TIFFDirEn _TIFFfree(data); return(0); } - _TIFFmemcpy(resizeddata,data,(uint32)dir->tdir_count*sizeof(uint64)); - _TIFFmemset(resizeddata+(uint32)dir->tdir_count,0,(nstrips-(uint32)dir->tdir_count)*sizeof(uint64)); + if( dir->tdir_count ) + _TIFFmemcpy(resizeddata,data, (uint32)dir->tdir_count * sizeof(uint64)); + _TIFFmemset(resizeddata+(uint32)dir->tdir_count, 0, (nstrips - (uint32)dir->tdir_count) * sizeof(uint64)); _TIFFfree(data); data=resizeddata; }
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