diff options
Diffstat (limited to 'gnu/packages/patches/libtiff-tiffycbcrtorgb-integer-overflow.patch')
| -rw-r--r-- | gnu/packages/patches/libtiff-tiffycbcrtorgb-integer-overflow.patch | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/gnu/packages/patches/libtiff-tiffycbcrtorgb-integer-overflow.patch b/gnu/packages/patches/libtiff-tiffycbcrtorgb-integer-overflow.patch new file mode 100644 index 0000000000..060740d953 --- /dev/null +++ b/gnu/packages/patches/libtiff-tiffycbcrtorgb-integer-overflow.patch @@ -0,0 +1,57 @@ +Fix an integer overflow TIFFYCbCrtoRGB(): + +https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1844 + +3rd party Git reference: + +https://github.com/vadz/libtiff/commit/02669064e927074819ce1ed39aba0fccaa167717 + +2017-05-29 Even Rouault <even.rouault at spatialys.com> + + * libtiff/tif_color.c: TIFFYCbCrToRGBInit(): stricter clamping to avoid + int32 overflow in TIFFYCbCrtoRGB(). + Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1844 + Credit to OSS Fuzz + + +/cvs/maptools/cvsroot/libtiff/ChangeLog,v <-- ChangeLog +new revision: 1.1241; previous revision: 1.1240 +/cvs/maptools/cvsroot/libtiff/libtiff/tif_color.c,v <-- libtiff/tif_color.c +new revision: 1.24; previous revision: 1.23 + +Index: libtiff/libtiff/tif_color.c +=================================================================== +RCS file: /cvs/maptools/cvsroot/libtiff/libtiff/tif_color.c,v +retrieving revision 1.23 +retrieving revision 1.24 +diff -u -r1.23 -r1.24 +--- libtiff/libtiff/tif_color.c 13 May 2017 18:17:34 -0000 1.23 ++++ libtiff/libtiff/tif_color.c 29 May 2017 10:12:54 -0000 1.24 +@@ -1,4 +1,4 @@ +-/* $Id: tif_color.c,v 1.23 2017-05-13 18:17:34 erouault Exp $ */ ++/* $Id: tif_color.c,v 1.24 2017-05-29 10:12:54 erouault Exp $ */ + + /* + * Copyright (c) 1988-1997 Sam Leffler +@@ -275,10 +275,10 @@ + for (i = 0, x = -128; i < 256; i++, x++) { + int32 Cr = (int32)CLAMPw(Code2V(x, refBlackWhite[4] - 128.0F, + refBlackWhite[5] - 128.0F, 127), +- -128.0F * 64, 128.0F * 64); ++ -128.0F * 32, 128.0F * 32); + int32 Cb = (int32)CLAMPw(Code2V(x, refBlackWhite[2] - 128.0F, + refBlackWhite[3] - 128.0F, 127), +- -128.0F * 64, 128.0F * 64); ++ -128.0F * 32, 128.0F * 32); + + ycbcr->Cr_r_tab[i] = (int32)((D1*Cr + ONE_HALF)>>SHIFT); + ycbcr->Cb_b_tab[i] = (int32)((D3*Cb + ONE_HALF)>>SHIFT); +@@ -286,7 +286,7 @@ + ycbcr->Cb_g_tab[i] = D4*Cb + ONE_HALF; + ycbcr->Y_tab[i] = + (int32)CLAMPw(Code2V(x + 128, refBlackWhite[0], refBlackWhite[1], 255), +- -128.0F * 64, 128.0F * 64); ++ -128.0F * 32, 128.0F * 32); + } + } + |