This patch adds support for newer versions of Poppler and some upstream TexLive fixes, including one for CVE-2018-17407. It is taken from Linux From Scratch: . Submitted By: Ken Moffat Date: 2018-12-26 Initial Package Version: 20180414 Upstream Status: Applied Origin: Upstream Description: Two fixes, cherry-picked from svn plus a CVE fix. I have removed the partial fixes for various system versions of poppler. r47469 Fix segfault in dvipdfm-x (XeTeX) on 1/2/4-bit transparent indexed PNGs. r47477 Fix a ptex regression for discontinuous kinsoku table. Also, via fedora (I got lost in svn) a critical fix for CVE-2018-17407 "A buffer overflow in the handling of Type 1 fonts allows arbitrary code execution when a malicious font is loaded by one of the vulnerable tools: pdflatex, pdftex, dvips, or luatex." diff -Naur a/texk/dvipdfm-x/pngimage.c b/texk/dvipdfm-x/pngimage.c --- a/texk/dvipdfm-x/pngimage.c 2018-02-17 08:41:35.000000000 +0000 +++ b/texk/dvipdfm-x/pngimage.c 2018-10-09 01:52:01.648670875 +0100 @@ -964,12 +964,16 @@ png_bytep trans; int num_trans; png_uint_32 i; + png_byte bpc, mask, shift; if (!png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS) || !png_get_tRNS(png_ptr, info_ptr, &trans, &num_trans, NULL)) { WARN("%s: PNG does not have valid tRNS chunk but tRNS is requested.", PNG_DEBUG_STR); return NULL; } + bpc = png_get_bit_depth(png_ptr, info_ptr); + mask = 0xff >> (8 - bpc); + shift = 8 - bpc; smask = pdf_new_stream(STREAM_COMPRESS); dict = pdf_stream_dict(smask); @@ -981,7 +985,8 @@ pdf_add_dict(dict, pdf_new_name("ColorSpace"), pdf_new_name("DeviceGray")); pdf_add_dict(dict, pdf_new_name("BitsPerComponent"), pdf_new_number(8)); for (i = 0; i < width*height; i++) { - png_byte idx = image_data_ptr[i]; + /* data is packed for 1/2/4 bpc formats, msb first */ + png_byte idx = (image_data_ptr[bpc * i / 8] >> (shift - bpc * i % 8)) & mask; smask_data_ptr[i] = (idx < num_trans) ? trans[idx] : 0xff; } pdf_add_stream(smask, (char *)smask_data_ptr, width*height); diff -Naur a/texk/dvipsk/writet1.c b/texk/dvipsk/writet1.c --- a/texk/dvipsk/writet1.c 2016-11-25 18:24:26.000000000 +0000 +++ b/texk/dvipsk/writet1.c 2018-10-09 01:52:01.648670875 +0100 @@ -1449,7 +1449,9 @@ *(strend(t1_buf_array) - 1) = ' '; t1_getline(); + alloc_array(t1_buf, strlen(t1_line_array) + strlen(t1_buf_array) + 1, T1_BUF_SIZE); strcat(t1_buf_array, t1_line_array); + alloc_array(t1_line, strlen(t1_buf_array) + 1, T1_BUF_SIZE); strcpy(t1_line_array, t1_buf_array); t1_line_ptr = eol(t1_line_array); } diff -Naur a/texk/web2c/luatexdir/font/writet1.w b/texk/web2c/luatexdir/font/writet1.w --- a/texk/web2c/luatexdir/font/writet1.w 2016-11-25 18:24:34.000000000 +0000 +++ b/texk/web2c/luatexdir/font/writet1.w 2018-10-09 01:52:01.648670875 +0100 @@ -1625,7 +1625,9 @@ if (sscanf(p, "%i", &i) != 1) { strcpy(t1_buf_array, t1_line_array); t1_getline(); + alloc_array(t1_buf, strlen(t1_line_array) + strlen(t1_buf_array) + 1, T1_BUF_SIZE); strcat(t1_buf_array, t1_line_array); + alloc_array(t1_line, strlen(t1_buf_array) + 1, T1_BUF_SIZE); strcpy(t1_line_array, t1_buf_array); t1_line_ptr = eol(t1_line_array); } diff -Naur a/texk/web2c/luatexdir/image/pdftoepdf.w b/texk/web2c/luatexdir/image/pdftoepdf.w --- a/texk/web2c/luatexdir/image/pdftoepdf.w 2018-01-17 18:00:12.000000000 +0000 +++ b/texk/web2c/luatexdir/image/pdftoepdf.w 2018-10-09 01:52:01.648670875 +0100 @@ -472,10 +472,10 @@ break; */ case objString: - copyString(pdf, obj->getString()); + copyString(pdf, (GooString *)obj->getString()); break; case objName: - copyName(pdf, obj->getName()); + copyName(pdf, (char *)obj->getName()); break; case objNull: pdf_add_null(pdf); diff -Naur a/texk/web2c/luatexdir/lua/lepdflib.cc b/texk/web2c/luatexdir/lua/lepdflib.cc --- a/texk/web2c/luatexdir/lua/lepdflib.cc 2018-02-14 14:44:38.000000000 +0000 +++ b/texk/web2c/luatexdir/lua/lepdflib.cc 2018-10-09 01:52:01.649670868 +0100 @@ -674,7 +674,7 @@ uin = (udstruct *) luaL_checkudata(L, 1, M_##in); \ if (uin->pd != NULL && uin->pd->pc != uin->pc) \ pdfdoc_changed_error(L); \ - gs = ((in *) uin->d)->function(); \ + gs = (GooString *)((in *) uin->d)->function(); \ if (gs != NULL) \ lua_pushlstring(L, gs->getCString(), gs->getLength()); \ else \ @@ -1813,7 +1813,7 @@ if (uin->pd != NULL && uin->pd->pc != uin->pc) pdfdoc_changed_error(L); if (((Object *) uin->d)->isString()) { - gs = ((Object *) uin->d)->getString(); + gs = (GooString *)((Object *) uin->d)->getString(); lua_pushlstring(L, gs->getCString(), gs->getLength()); } else lua_pushnil(L); diff -Naur a/texk/web2c/pdftexdir/writet1.c b/texk/web2c/pdftexdir/writet1.c --- a/texk/web2c/pdftexdir/writet1.c 2016-11-25 18:24:37.000000000 +0000 +++ b/texk/web2c/pdftexdir/writet1.c 2018-10-09 01:52:01.649670868 +0100 @@ -1598,7 +1598,9 @@ *(strend(t1_buf_array) - 1) = ' '; t1_getline(); + alloc_array(t1_buf, strlen(t1_line_array) + strlen(t1_buf_array) + 1, T1_BUF_SIZE); strcat(t1_buf_array, t1_line_array); + alloc_array(t1_line, strlen(t1_buf_array) + 1, T1_BUF_SIZE); strcpy(t1_line_array, t1_buf_array); t1_line_ptr = eol(t1_line_array); } diff -Naur a/texk/web2c/ptexdir/ptex_version.h b/texk/web2c/ptexdir/ptex_version.h --- a/texk/web2c/ptexdir/ptex_version.h 2018-01-21 03:48:06.000000000 +0000 +++ b/texk/web2c/ptexdir/ptex_version.h 2018-10-09 01:52:01.649670868 +0100 @@ -1 +1 @@ -#define PTEX_VERSION "p3.8.0" +#define PTEX_VERSION "p3.8.1" diff -Naur a/texk/web2c/ptexdir/tests/free_ixsp.tex b/texk/web2c/ptexdir/tests/free_ixsp.tex --- a/texk/web2c/ptexdir/tests/free_ixsp.tex 1970-01-01 01:00:00.000000000 +0100 +++ b/texk/web2c/ptexdir/tests/free_ixsp.tex 2018-10-09 01:52:01.649670868 +0100 @@ -0,0 +1,53 @@ +%#!eptex -ini -etex +\let\dump\relax +\batchmode +\input plain + +\errorstopmode +\catcode`@=11 +\newcount\@tempcnta +\newcount\@tempcntb +\newcount\@tempcntc +\mathchardef\LIM=256 + +\def\MYCHAR#1{% + \@tempcntc=\numexpr7*#1+"101\relax + \@tempcnta=\@tempcntc\divide\@tempcnta 94 + \@tempcntb=\numexpr\@tempcntc-94*\@tempcnta+1\relax + \ifnum\@tempcntb<0\advance\@tempcntb94 \advance\@tempcnta-1\fi + \advance\@tempcnta18 % 18区以降 + \CNTA=\kuten\numexpr"100*\@tempcnta+\@tempcntb\relax +} + +\newcount\CNT\newcount\CNTA +\CNT=0 +\loop + \MYCHAR\CNT + \message{\the\CNT.} + \inhibitxspcode\CNTA=1\relax + \advance\CNT1\relax + \ifnum\CNT<\LIM +\repeat + +\newcount\CNTB + +\loop + \MYCHAR\CNTB + \global\inhibitxspcode\CNTA=3 +{% +\CNT=0 +\loop + \MYCHAR\CNT + \count@=\numexpr 1-\inhibitxspcode\CNTA\relax + \ifnum\count@=0\else\ifnum\CNTB=\CNT\else + \errmessage{<\the\CNTB, \the\CNT, \the\inhibitxspcode\CNTA>}\fi\fi + \advance\CNT1\relax + \ifnum\CNT<\LIM +\repeat +} + \MYCHAR\CNTB + \global\inhibitxspcode\CNTA=1\relax + \advance\CNTB1\relax + \ifnum\CNTB<\LIM +\repeat +\bye diff -Naur a/texk/web2c/ptexdir/tests/free_pena.tex b/texk/web2c/ptexdir/tests/free_pena.tex --- a/texk/web2c/ptexdir/tests/free_pena.tex 1970-01-01 01:00:00.000000000 +0100 +++ b/texk/web2c/ptexdir/tests/free_pena.tex 2018-10-09 01:52:01.649670868 +0100 @@ -0,0 +1,52 @@ +%#!eptex -ini -etex +\let\dump\relax +\batchmode +\input plain + +\errorstopmode +\catcode`@=11 +\newcount\@tempcnta +\newcount\@tempcntb +\newcount\@tempcntc +\mathchardef\LIM=256 + +\def\MYCHAR#1{% + \@tempcntc=\numexpr7*#1+"101\relax + \@tempcnta=\@tempcntc\divide\@tempcnta 94 + \@tempcntb=\numexpr\@tempcntc-94*\@tempcnta+1\relax + \ifnum\@tempcntb<0\advance\@tempcntb94 \advance\@tempcnta-1\fi + \advance\@tempcnta18 % 18区以降 + \CNTA=\kuten\numexpr"100*\@tempcnta+\@tempcntb\relax +} + +\newcount\CNT\newcount\CNTA +\CNT=0 +\loop + \MYCHAR\CNT + \message{\the\CNT.} + \prebreakpenalty\CNTA=\numexpr\CNT+1\relax + \advance\CNT1\relax + \ifnum\CNT<\LIM +\repeat + +\newcount\CNTB + +\loop + \MYCHAR\CNTB + \global\prebreakpenalty\CNTA=0 +{% +\CNT=0 +\loop + \MYCHAR\CNT + \count@=\numexpr -\CNT-1+\prebreakpenalty\CNTA\relax + \ifnum\count@=0\else\ifnum\CNTB=\CNT\else\errmessage{<\the\CNTB, \the\CNT>}\fi\fi + \advance\CNT1\relax + \ifnum\CNT<\LIM +\repeat +} + \MYCHAR\CNTB + \global\prebreakpenalty\CNTA=\numexpr\CNTB+1\relax + \advance\CNTB1\relax + \ifnum\CNTB<\LIM +\repeat +\bye