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Gentoo's Bugzilla – Attachment 74936 Details for
Bug 115851
app-office/{koffice,kword}|kde-base/{kpdf,kdegraphics}: another round of xpdf patches
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[patch]
post-1.3-koffice-CAN-2005-3193.diff (updated)
post-1.3-koffice-CAN-2005-3193.diff (text/plain), 6.60 KB, created by
Carsten Lohrke (RETIRED)
on 2005-12-17 05:52:41 UTC
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Description:
post-1.3-koffice-CAN-2005-3193.diff (updated)
Filename:
MIME Type:
Creator:
Carsten Lohrke (RETIRED)
Created:
2005-12-17 05:52:41 UTC
Size:
6.60 KB
patch
obsolete
>Index: filters/kword/pdf/xpdf/xpdf/JBIG2Stream.cc >=================================================================== >--- filters/kword/pdf/xpdf/xpdf/JBIG2Stream.cc (revision 409205) >+++ filters/kword/pdf/xpdf/xpdf/JBIG2Stream.cc (revision 488234) >@@ -7,6 +7,7 @@ > //======================================================================== > > #include <aconf.h> >+#include <limits.h> > > #ifdef USE_GCC_PRAGMAS > #pragma implementation >@@ -977,6 +978,13 @@ JBIG2Bitmap::JBIG2Bitmap(Guint segNumA, > w = wA; > h = hA; > line = (wA + 7) >> 3; >+ >+ if (h < 0 || line <= 0 || h >= INT_MAX / line) { >+ error(-1, "invalid width/height"); >+ data = NULL; >+ return; >+ } >+ > data = (Guchar *)gmalloc(h * line); > } > >@@ -986,6 +994,13 @@ JBIG2Bitmap::JBIG2Bitmap(Guint segNumA, > w = bitmap->w; > h = bitmap->h; > line = bitmap->line; >+ >+ if (h < 0 || line <= 0 || h >= INT_MAX / line) { >+ error(-1, "invalid width/height"); >+ data = NULL; >+ return; >+ } >+ > data = (Guchar *)gmalloc(h * line); > memcpy(data, bitmap->data, h * line); > } >@@ -1012,7 +1027,10 @@ JBIG2Bitmap *JBIG2Bitmap::getSlice(Guint > } > > void JBIG2Bitmap::expand(int newH, Guint pixel) { >- if (newH <= h) { >+ if (newH <= h || line <= 0 || newH >= INT_MAX / line) { >+ error(-1, "invalid width/height"); >+ gfree(data); >+ data = NULL; > return; > } > data = (Guchar *)grealloc(data, newH * line); >@@ -2505,6 +2523,15 @@ void JBIG2Stream::readHalftoneRegionSeg( > error(getPos(), "Bad symbol dictionary reference in JBIG2 halftone segment"); > return; > } >+ if (gridH == 0 || gridW >= INT_MAX / gridH) { >+ error(getPos(), "Bad size in JBIG2 halftone segment"); >+ return; >+ } >+ if (w == 0 || h >= INT_MAX / w) { >+ error(getPos(), "Bad size in JBIG2 bitmap segment"); >+ return; >+ } >+ > patternDict = (JBIG2PatternDict *)seg; > bpp = 0; > i = 1; >@@ -3078,6 +3105,11 @@ JBIG2Bitmap *JBIG2Stream::readGenericRef > Guint ltpCX, cx, cx0, cx2, cx3, cx4, tpgrCX0, tpgrCX1, tpgrCX2; > int x, y, pix; > >+ if (w < 0 || h <= 0 || w >= INT_MAX / h) { >+ error(-1, "invalid width/height"); >+ return NULL; >+ } >+ > bitmap = new JBIG2Bitmap(0, w, h); > bitmap->clearToZero(); > >Index: filters/kword/pdf/xpdf/xpdf/Stream.cc >=================================================================== >--- filters/kword/pdf/xpdf/xpdf/Stream.cc (revision 409205) >+++ filters/kword/pdf/xpdf/xpdf/Stream.cc (revision 488234) >@@ -15,6 +15,7 @@ > #include <stdio.h> > #include <stdlib.h> > #include <stddef.h> >+#include <limits.h> > #ifndef WIN32 > #include <unistd.h> > #endif >@@ -409,13 +410,28 @@ StreamPredictor::StreamPredictor(Stream > width = widthA; > nComps = nCompsA; > nBits = nBitsA; >+ predLine = NULL; >+ ok = gFalse; >+ >+ if (width <= 0 || nComps <= 0 || nBits <= 0 || >+ nComps >= INT_MAX / nBits || >+ width >= INT_MAX / nComps / nBits) >+ return; > > nVals = width * nComps; >+ if (nVals + 7 <= 0) >+ return; >+ > pixBytes = (nComps * nBits + 7) >> 3; > rowBytes = ((nVals * nBits + 7) >> 3) + pixBytes; >+ if (rowBytes < 0) >+ return; >+ > predLine = (Guchar *)gmalloc(rowBytes); > memset(predLine, 0, rowBytes); > predIdx = rowBytes; >+ >+ ok = gTrue; > } > > StreamPredictor::~StreamPredictor() { >@@ -982,6 +998,10 @@ LZWStream::LZWStream(Stream *strA, int p > FilterStream(strA) { > if (predictor != 1) { > pred = new StreamPredictor(this, predictor, columns, colors, bits); >+ if ( !pred->isOk()) { >+ delete pred; >+ pred = NULL; >+ } > } else { > pred = NULL; > } >@@ -1227,6 +1247,11 @@ CCITTFaxStream::CCITTFaxStream(Stream *s > endOfLine = endOfLineA; > byteAlign = byteAlignA; > columns = columnsA; >+ if (columns < 1 || columns + 2 < 0 || columns + 3 < 0 || >+ (columns + 2) >= INT_MAX / sizeof(short) || (columns + 3) >= INT_MAX / sizeof(short)) { >+ error(-1, "invalid number of columns"); >+ exit(1); >+ } > rows = rowsA; > endOfBlock = endOfBlockA; > black = blackA; >@@ -2861,6 +2886,11 @@ GBool DCTStream::readBaselineSOF() { > height = read16(); > width = read16(); > numComps = str->getChar(); >+ if (numComps <= 0 || numComps > 4) { >+ numComps = 0; >+ error(getPos(), "Bad number of components in DCT stream"); >+ return gFalse; >+ } > if (prec != 8) { > error(getPos(), "Bad DCT precision %d", prec); > return gFalse; >@@ -2887,6 +2917,11 @@ GBool DCTStream::readProgressiveSOF() { > height = read16(); > width = read16(); > numComps = str->getChar(); >+ if (numComps <= 0 || numComps > 4) { >+ numComps = 0; >+ error(getPos(), "Bad number of components in DCT stream"); >+ return gFalse; >+ } > if (prec != 8) { > error(getPos(), "Bad DCT precision %d", prec); > return gFalse; >@@ -2909,6 +2944,11 @@ GBool DCTStream::readScanInfo() { > > length = read16() - 2; > scanInfo.numComps = str->getChar(); >+ if (scanInfo.numComps <= 0 || scanInfo.numComps > 4) { >+ scanInfo.numComps = 0; >+ error(getPos(), "Bad number of components in DCT stream"); >+ return gFalse; >+ } > --length; > if (length != 2 * scanInfo.numComps + 3) { > error(getPos(), "Bad DCT scan info block"); >@@ -2976,12 +3016,12 @@ GBool DCTStream::readHuffmanTables() { > while (length > 0) { > index = str->getChar(); > --length; >- if ((index & 0x0f) >= 4) { >+ if ((index & ~0x10) >= 4 || (index & ~0x10) < 0) { > error(getPos(), "Bad DCT Huffman table"); > return gFalse; > } > if (index & 0x10) { >- index &= 0x0f; >+ index &= 0x03; > if (index >= numACHuffTables) > numACHuffTables = index+1; > tbl = &acHuffTables[index]; >@@ -3069,9 +3109,11 @@ int DCTStream::readMarker() { > do { > do { > c = str->getChar(); >+ if(c == EOF) return EOF; > } while (c != 0xff); > do { > c = str->getChar(); >+ if(c == EOF) return EOF; > } while (c == 0xff); > } while (c == 0x00); > return c; >@@ -3179,6 +3221,10 @@ FlateStream::FlateStream(Stream *strA, i > FilterStream(strA) { > if (predictor != 1) { > pred = new StreamPredictor(this, predictor, columns, colors, bits); >+ if ( !pred->isOk()) { >+ delete pred; >+ pred = NULL; >+ } > } else { > pred = NULL; > } >Index: filters/kword/pdf/xpdf/xpdf/Stream.h >=================================================================== >--- filters/kword/pdf/xpdf/xpdf/Stream.h (revision 409205) >+++ filters/kword/pdf/xpdf/xpdf/Stream.h (revision 488234) >@@ -227,6 +227,7 @@ public: > > int lookChar(); > int getChar(); >+ GBool isOk() { return ok; } > > private: > >@@ -242,6 +243,7 @@ private: > int rowBytes; // bytes per line > Guchar *predLine; // line buffer > int predIdx; // current index in predLine >+ GBool ok; > }; > > //------------------------------------------------------------------------
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bug 115851
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74937
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74941