61adfb00b1
* gnu/packages/patches/libtiff-tiffycbcrtorgb-integer-overflow.patch, gnu/packages/patches/libtiff-tiffycbcrtorgbinit-integer-overflow.patch: New files. * gnu/local.mk (dist_patch_DATA): Add them. * gnu/packages/image.scm (libtiff-4.0.8)[source]: Use them.
43 lines
1.5 KiB
Diff
43 lines
1.5 KiB
Diff
Fix an integer overflow in initYCbCrConversion():
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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1907
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3rd party Git reference
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https://github.com/vadz/libtiff/commit/468988860e0dae62ebbf991627c74bcbb4bd256f
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* libtiff/tif_getimage.c: initYCbCrConversion(): stricter validation for
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refBlackWhite coefficients values. To avoid invalid float->int32 conversion
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(when refBlackWhite[0] == 2147483648.f)
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1907
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Credit to OSS Fuzz
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/cvs/maptools/cvsroot/libtiff/ChangeLog,v <-- ChangeLog
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new revision: 1.1243; previous revision: 1.1242
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/cvs/maptools/cvsroot/libtiff/libtiff/tif_getimage.c,v <-- libtiff/tif_getimage.c
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new revision: 1.107; previous revision: 1.106
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Index: libtiff/libtiff/tif_getimage.c
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===================================================================
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RCS file: /cvs/maptools/cvsroot/libtiff/libtiff/tif_getimage.c,v
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retrieving revision 1.106
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retrieving revision 1.107
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diff -u -r1.106 -r1.107
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--- libtiff/libtiff/tif_getimage.c 20 May 2017 11:29:02 -0000 1.106
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+++ libtiff/libtiff/tif_getimage.c 29 May 2017 11:29:06 -0000 1.107
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@@ -1,4 +1,4 @@
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-/* $Id: tif_getimage.c,v 1.106 2017-05-20 11:29:02 erouault Exp $ */
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+/* $Id: tif_getimage.c,v 1.107 2017-05-29 11:29:06 erouault Exp $ */
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/*
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* Copyright (c) 1991-1997 Sam Leffler
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@@ -2241,7 +2241,7 @@
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static int isInRefBlackWhiteRange(float f)
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{
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- return f >= (float)(-0x7FFFFFFF + 128) && f <= (float)0x7FFFFFFF;
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+ return f > (float)(-0x7FFFFFFF + 128) && f < (float)0x7FFFFFFF;
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}
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static int
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