diff options
Diffstat (limited to 'meta/recipes-multimedia/libtiff/tiff/0001-tiffcrop-subroutines-require-a-larger-buffer-fixes-2.patch')
-rw-r--r-- | meta/recipes-multimedia/libtiff/tiff/0001-tiffcrop-subroutines-require-a-larger-buffer-fixes-2.patch | 640 |
1 files changed, 640 insertions, 0 deletions
diff --git a/meta/recipes-multimedia/libtiff/tiff/0001-tiffcrop-subroutines-require-a-larger-buffer-fixes-2.patch b/meta/recipes-multimedia/libtiff/tiff/0001-tiffcrop-subroutines-require-a-larger-buffer-fixes-2.patch new file mode 100644 index 0000000000..e10e37ccc9 --- /dev/null +++ b/meta/recipes-multimedia/libtiff/tiff/0001-tiffcrop-subroutines-require-a-larger-buffer-fixes-2.patch @@ -0,0 +1,640 @@ +From 1e000b3484808f1ee7a68bd276220d1cd82dec73 Mon Sep 17 00:00:00 2001 +From: Su Laus <sulau@freenet.de> +Date: Thu, 13 Oct 2022 14:33:27 +0000 +Subject: [PATCH] tiffcrop subroutines require a larger buffer (fixes #271, + #381, #386, #388, #389, #435) + +CVE: CVE-2022-3570 CVE-2022-3598 +Upstream-Status: Backport +Signed-off-by: Ross Burton <ross.burton@arm.com> +--- + tools/tiffcrop.c | 203 ++++++++++++++++++++++++++--------------------- + 1 file changed, 114 insertions(+), 89 deletions(-) + +diff --git a/tools/tiffcrop.c b/tools/tiffcrop.c +index f96c7d60..adf0f849 100644 +--- a/tools/tiffcrop.c ++++ b/tools/tiffcrop.c +@@ -210,6 +210,10 @@ static char tiffcrop_rev_date[] = "02-09-2022"; + + #define TIFF_DIR_MAX 65534 + ++/* Some conversion subroutines require image buffers, which are at least 3 bytes ++ * larger than the necessary size for the image itself. */ ++#define NUM_BUFF_OVERSIZE_BYTES 3 ++ + /* Offsets into buffer for margins and fixed width and length segments */ + struct offset { + uint32_t tmargin; +@@ -231,7 +235,7 @@ struct offset { + */ + + struct buffinfo { +- uint32_t size; /* size of this buffer */ ++ size_t size; /* size of this buffer */ + unsigned char *buffer; /* address of the allocated buffer */ + }; + +@@ -805,8 +809,8 @@ static int readContigTilesIntoBuffer (TIFF* in, uint8_t* buf, + uint32_t dst_rowsize, shift_width; + uint32_t bytes_per_sample, bytes_per_pixel; + uint32_t trailing_bits, prev_trailing_bits; +- uint32_t tile_rowsize = TIFFTileRowSize(in); +- uint32_t src_offset, dst_offset; ++ tmsize_t tile_rowsize = TIFFTileRowSize(in); ++ tmsize_t src_offset, dst_offset; + uint32_t row_offset, col_offset; + uint8_t *bufp = (uint8_t*) buf; + unsigned char *src = NULL; +@@ -856,7 +860,7 @@ static int readContigTilesIntoBuffer (TIFF* in, uint8_t* buf, + TIFFError("readContigTilesIntoBuffer", "Integer overflow when calculating buffer size."); + exit(EXIT_FAILURE); + } +- tilebuf = limitMalloc(tile_buffsize + 3); ++ tilebuf = limitMalloc(tile_buffsize + NUM_BUFF_OVERSIZE_BYTES); + if (tilebuf == 0) + return 0; + tilebuf[tile_buffsize] = 0; +@@ -1019,7 +1023,7 @@ static int readSeparateTilesIntoBuffer (TIFF* in, uint8_t *obuf, + for (sample = 0; (sample < spp) && (sample < MAX_SAMPLES); sample++) + { + srcbuffs[sample] = NULL; +- tbuff = (unsigned char *)limitMalloc(tilesize + 8); ++ tbuff = (unsigned char *)limitMalloc(tilesize + NUM_BUFF_OVERSIZE_BYTES); + if (!tbuff) + { + TIFFError ("readSeparateTilesIntoBuffer", +@@ -1213,7 +1217,8 @@ writeBufferToSeparateStrips (TIFF* out, uint8_t* buf, + } + rowstripsize = rowsperstrip * bytes_per_sample * (width + 1); + +- obuf = limitMalloc (rowstripsize); ++ /* Add 3 padding bytes for extractContigSamples32bits */ ++ obuf = limitMalloc (rowstripsize + NUM_BUFF_OVERSIZE_BYTES); + if (obuf == NULL) + return 1; + +@@ -1226,7 +1231,7 @@ writeBufferToSeparateStrips (TIFF* out, uint8_t* buf, + stripsize = TIFFVStripSize(out, nrows); + src = buf + (row * rowsize); + total_bytes += stripsize; +- memset (obuf, '\0', rowstripsize); ++ memset (obuf, '\0',rowstripsize + NUM_BUFF_OVERSIZE_BYTES); + if (extractContigSamplesToBuffer(obuf, src, nrows, width, s, spp, bps, dump)) + { + _TIFFfree(obuf); +@@ -1234,10 +1239,15 @@ writeBufferToSeparateStrips (TIFF* out, uint8_t* buf, + } + if ((dump->outfile != NULL) && (dump->level == 1)) + { +- dump_info(dump->outfile, dump->format,"", ++ if (scanlinesize > 0x0ffffffffULL) { ++ dump_info(dump->infile, dump->format, "loadImage", ++ "Attention: scanlinesize %"PRIu64" is larger than UINT32_MAX.\nFollowing dump might be wrong.", ++ scanlinesize); ++ } ++ dump_info(dump->outfile, dump->format,"", + "Sample %2d, Strip: %2d, bytes: %4d, Row %4d, bytes: %4d, Input offset: %6d", +- s + 1, strip + 1, stripsize, row + 1, scanlinesize, src - buf); +- dump_buffer(dump->outfile, dump->format, nrows, scanlinesize, row, obuf); ++ s + 1, strip + 1, stripsize, row + 1, (uint32_t)scanlinesize, src - buf); ++ dump_buffer(dump->outfile, dump->format, nrows, (uint32_t)scanlinesize, row, obuf); + } + + if (TIFFWriteEncodedStrip(out, strip++, obuf, stripsize) < 0) +@@ -1264,7 +1274,7 @@ static int writeBufferToContigTiles (TIFF* out, uint8_t* buf, uint32_t imageleng + uint32_t tl, tw; + uint32_t row, col, nrow, ncol; + uint32_t src_rowsize, col_offset; +- uint32_t tile_rowsize = TIFFTileRowSize(out); ++ tmsize_t tile_rowsize = TIFFTileRowSize(out); + uint8_t* bufp = (uint8_t*) buf; + tsize_t tile_buffsize = 0; + tsize_t tilesize = TIFFTileSize(out); +@@ -1307,9 +1317,11 @@ static int writeBufferToContigTiles (TIFF* out, uint8_t* buf, uint32_t imageleng + } + src_rowsize = ((imagewidth * spp * bps) + 7U) / 8; + +- tilebuf = limitMalloc(tile_buffsize); ++ /* Add 3 padding bytes for extractContigSamples32bits */ ++ tilebuf = limitMalloc(tile_buffsize + NUM_BUFF_OVERSIZE_BYTES); + if (tilebuf == 0) + return 1; ++ memset(tilebuf, 0, tile_buffsize + NUM_BUFF_OVERSIZE_BYTES); + for (row = 0; row < imagelength; row += tl) + { + nrow = (row + tl > imagelength) ? imagelength - row : tl; +@@ -1355,7 +1367,8 @@ static int writeBufferToSeparateTiles (TIFF* out, uint8_t* buf, uint32_t imagele + uint32_t imagewidth, tsample_t spp, + struct dump_opts * dump) + { +- tdata_t obuf = limitMalloc(TIFFTileSize(out)); ++ /* Add 3 padding bytes for extractContigSamples32bits */ ++ tdata_t obuf = limitMalloc(TIFFTileSize(out) + NUM_BUFF_OVERSIZE_BYTES); + uint32_t tl, tw; + uint32_t row, col, nrow, ncol; + uint32_t src_rowsize, col_offset; +@@ -1365,6 +1378,7 @@ static int writeBufferToSeparateTiles (TIFF* out, uint8_t* buf, uint32_t imagele + + if (obuf == NULL) + return 1; ++ memset(obuf, 0, TIFFTileSize(out) + NUM_BUFF_OVERSIZE_BYTES); + + if( !TIFFGetField(out, TIFFTAG_TILELENGTH, &tl) || + !TIFFGetField(out, TIFFTAG_TILEWIDTH, &tw) || +@@ -1790,14 +1804,14 @@ void process_command_opts (int argc, char *argv[], char *mp, char *mode, uint32 + + *opt_offset = '\0'; + /* convert option to lowercase */ +- end = strlen (opt_ptr); ++ end = (unsigned int)strlen (opt_ptr); + for (i = 0; i < end; i++) + *(opt_ptr + i) = tolower((int) *(opt_ptr + i)); + /* Look for dump format specification */ + if (strncmp(opt_ptr, "for", 3) == 0) + { + /* convert value to lowercase */ +- end = strlen (opt_offset + 1); ++ end = (unsigned int)strlen (opt_offset + 1); + for (i = 1; i <= end; i++) + *(opt_offset + i) = tolower((int) *(opt_offset + i)); + /* check dump format value */ +@@ -2270,6 +2284,8 @@ main(int argc, char* argv[]) + size_t length; + char temp_filename[PATH_MAX + 16]; /* Extra space keeps the compiler from complaining */ + ++ assert(NUM_BUFF_OVERSIZE_BYTES >= 3); ++ + little_endian = *((unsigned char *)&little_endian) & '1'; + + initImageData(&image); +@@ -3222,13 +3238,13 @@ extractContigSamples32bits (uint8_t *in, uint8_t *out, uint32_t cols, + /* If we have a full buffer's worth, write it out */ + if (ready_bits >= 32) + { +- bytebuff1 = (buff2 >> 56); ++ bytebuff1 = (uint8_t)(buff2 >> 56); + *dst++ = bytebuff1; +- bytebuff2 = (buff2 >> 48); ++ bytebuff2 = (uint8_t)(buff2 >> 48); + *dst++ = bytebuff2; +- bytebuff3 = (buff2 >> 40); ++ bytebuff3 = (uint8_t)(buff2 >> 40); + *dst++ = bytebuff3; +- bytebuff4 = (buff2 >> 32); ++ bytebuff4 = (uint8_t)(buff2 >> 32); + *dst++ = bytebuff4; + ready_bits -= 32; + +@@ -3637,13 +3653,13 @@ extractContigSamplesShifted32bits (uint8_t *in, uint8_t *out, uint32_t cols, + } + else /* If we have a full buffer's worth, write it out */ + { +- bytebuff1 = (buff2 >> 56); ++ bytebuff1 = (uint8_t)(buff2 >> 56); + *dst++ = bytebuff1; +- bytebuff2 = (buff2 >> 48); ++ bytebuff2 = (uint8_t)(buff2 >> 48); + *dst++ = bytebuff2; +- bytebuff3 = (buff2 >> 40); ++ bytebuff3 = (uint8_t)(buff2 >> 40); + *dst++ = bytebuff3; +- bytebuff4 = (buff2 >> 32); ++ bytebuff4 = (uint8_t)(buff2 >> 32); + *dst++ = bytebuff4; + ready_bits -= 32; + +@@ -3820,10 +3836,10 @@ extractContigSamplesToTileBuffer(uint8_t *out, uint8_t *in, uint32_t rows, uint3 + static int readContigStripsIntoBuffer (TIFF* in, uint8_t* buf) + { + uint8_t* bufp = buf; +- int32_t bytes_read = 0; ++ tmsize_t bytes_read = 0; + uint32_t strip, nstrips = TIFFNumberOfStrips(in); +- uint32_t stripsize = TIFFStripSize(in); +- uint32_t rows = 0; ++ tmsize_t stripsize = TIFFStripSize(in); ++ tmsize_t rows = 0; + uint32_t rps = TIFFGetFieldDefaulted(in, TIFFTAG_ROWSPERSTRIP, &rps); + tsize_t scanline_size = TIFFScanlineSize(in); + +@@ -3836,11 +3852,11 @@ static int readContigStripsIntoBuffer (TIFF* in, uint8_t* buf) + bytes_read = TIFFReadEncodedStrip (in, strip, bufp, -1); + rows = bytes_read / scanline_size; + if ((strip < (nstrips - 1)) && (bytes_read != (int32_t)stripsize)) +- TIFFError("", "Strip %"PRIu32": read %"PRId32" bytes, strip size %"PRIu32, ++ TIFFError("", "Strip %"PRIu32": read %"PRId64" bytes, strip size %"PRIu64, + strip + 1, bytes_read, stripsize); + + if (bytes_read < 0 && !ignore) { +- TIFFError("", "Error reading strip %"PRIu32" after %"PRIu32" rows", ++ TIFFError("", "Error reading strip %"PRIu32" after %"PRIu64" rows", + strip, rows); + return 0; + } +@@ -4305,13 +4321,13 @@ combineSeparateSamples32bits (uint8_t *in[], uint8_t *out, uint32_t cols, + /* If we have a full buffer's worth, write it out */ + if (ready_bits >= 32) + { +- bytebuff1 = (buff2 >> 56); ++ bytebuff1 = (uint8_t)(buff2 >> 56); + *dst++ = bytebuff1; +- bytebuff2 = (buff2 >> 48); ++ bytebuff2 = (uint8_t)(buff2 >> 48); + *dst++ = bytebuff2; +- bytebuff3 = (buff2 >> 40); ++ bytebuff3 = (uint8_t)(buff2 >> 40); + *dst++ = bytebuff3; +- bytebuff4 = (buff2 >> 32); ++ bytebuff4 = (uint8_t)(buff2 >> 32); + *dst++ = bytebuff4; + ready_bits -= 32; + +@@ -4354,10 +4370,10 @@ combineSeparateSamples32bits (uint8_t *in[], uint8_t *out, uint32_t cols, + "Row %3d, Col %3d, Src byte offset %3d bit offset %2d Dst offset %3d", + row + 1, col + 1, src_byte, src_bit, dst - out); + +- dump_long (dumpfile, format, "Match bits ", matchbits); ++ dump_wide (dumpfile, format, "Match bits ", matchbits); + dump_data (dumpfile, format, "Src bits ", src, 4); +- dump_long (dumpfile, format, "Buff1 bits ", buff1); +- dump_long (dumpfile, format, "Buff2 bits ", buff2); ++ dump_wide (dumpfile, format, "Buff1 bits ", buff1); ++ dump_wide (dumpfile, format, "Buff2 bits ", buff2); + dump_byte (dumpfile, format, "Write bits1", bytebuff1); + dump_byte (dumpfile, format, "Write bits2", bytebuff2); + dump_info (dumpfile, format, "", "Ready bits: %2d", ready_bits); +@@ -4830,13 +4846,13 @@ combineSeparateTileSamples32bits (uint8_t *in[], uint8_t *out, uint32_t cols, + /* If we have a full buffer's worth, write it out */ + if (ready_bits >= 32) + { +- bytebuff1 = (buff2 >> 56); ++ bytebuff1 = (uint8_t)(buff2 >> 56); + *dst++ = bytebuff1; +- bytebuff2 = (buff2 >> 48); ++ bytebuff2 = (uint8_t)(buff2 >> 48); + *dst++ = bytebuff2; +- bytebuff3 = (buff2 >> 40); ++ bytebuff3 = (uint8_t)(buff2 >> 40); + *dst++ = bytebuff3; +- bytebuff4 = (buff2 >> 32); ++ bytebuff4 = (uint8_t)(buff2 >> 32); + *dst++ = bytebuff4; + ready_bits -= 32; + +@@ -4879,10 +4895,10 @@ combineSeparateTileSamples32bits (uint8_t *in[], uint8_t *out, uint32_t cols, + "Row %3d, Col %3d, Src byte offset %3d bit offset %2d Dst offset %3d", + row + 1, col + 1, src_byte, src_bit, dst - out); + +- dump_long (dumpfile, format, "Match bits ", matchbits); ++ dump_wide (dumpfile, format, "Match bits ", matchbits); + dump_data (dumpfile, format, "Src bits ", src, 4); +- dump_long (dumpfile, format, "Buff1 bits ", buff1); +- dump_long (dumpfile, format, "Buff2 bits ", buff2); ++ dump_wide (dumpfile, format, "Buff1 bits ", buff1); ++ dump_wide (dumpfile, format, "Buff2 bits ", buff2); + dump_byte (dumpfile, format, "Write bits1", bytebuff1); + dump_byte (dumpfile, format, "Write bits2", bytebuff2); + dump_info (dumpfile, format, "", "Ready bits: %2d", ready_bits); +@@ -4905,7 +4921,7 @@ static int readSeparateStripsIntoBuffer (TIFF *in, uint8_t *obuf, uint32_t lengt + { + int i, bytes_per_sample, bytes_per_pixel, shift_width, result = 1; + uint32_t j; +- int32_t bytes_read = 0; ++ tmsize_t bytes_read = 0; + uint16_t bps = 0, planar; + uint32_t nstrips; + uint32_t strips_per_sample; +@@ -4971,7 +4987,7 @@ static int readSeparateStripsIntoBuffer (TIFF *in, uint8_t *obuf, uint32_t lengt + for (s = 0; (s < spp) && (s < MAX_SAMPLES); s++) + { + srcbuffs[s] = NULL; +- buff = limitMalloc(stripsize + 3); ++ buff = limitMalloc(stripsize + NUM_BUFF_OVERSIZE_BYTES); + if (!buff) + { + TIFFError ("readSeparateStripsIntoBuffer", +@@ -4994,7 +5010,7 @@ static int readSeparateStripsIntoBuffer (TIFF *in, uint8_t *obuf, uint32_t lengt + buff = srcbuffs[s]; + strip = (s * strips_per_sample) + j; + bytes_read = TIFFReadEncodedStrip (in, strip, buff, stripsize); +- rows_this_strip = bytes_read / src_rowsize; ++ rows_this_strip = (uint32_t)(bytes_read / src_rowsize); + if (bytes_read < 0 && !ignore) + { + TIFFError(TIFFFileName(in), +@@ -6047,13 +6063,14 @@ loadImage(TIFF* in, struct image_data *image, struct dump_opts *dump, unsigned c + uint16_t input_compression = 0, input_photometric = 0; + uint16_t subsampling_horiz, subsampling_vert; + uint32_t width = 0, length = 0; +- uint32_t stsize = 0, tlsize = 0, buffsize = 0, scanlinesize = 0; ++ tmsize_t stsize = 0, tlsize = 0, buffsize = 0; ++ tmsize_t scanlinesize = 0; + uint32_t tw = 0, tl = 0; /* Tile width and length */ +- uint32_t tile_rowsize = 0; ++ tmsize_t tile_rowsize = 0; + unsigned char *read_buff = NULL; + unsigned char *new_buff = NULL; + int readunit = 0; +- static uint32_t prev_readsize = 0; ++ static tmsize_t prev_readsize = 0; + + TIFFGetFieldDefaulted(in, TIFFTAG_BITSPERSAMPLE, &bps); + TIFFGetFieldDefaulted(in, TIFFTAG_SAMPLESPERPIXEL, &spp); +@@ -6355,7 +6372,7 @@ loadImage(TIFF* in, struct image_data *image, struct dump_opts *dump, unsigned c + TIFFError("loadImage", "Unable to allocate/reallocate read buffer"); + return (-1); + } +- read_buff = (unsigned char *)limitMalloc(buffsize+3); ++ read_buff = (unsigned char *)limitMalloc(buffsize + NUM_BUFF_OVERSIZE_BYTES); + } + else + { +@@ -6366,11 +6383,11 @@ loadImage(TIFF* in, struct image_data *image, struct dump_opts *dump, unsigned c + TIFFError("loadImage", "Unable to allocate/reallocate read buffer"); + return (-1); + } +- new_buff = _TIFFrealloc(read_buff, buffsize+3); ++ new_buff = _TIFFrealloc(read_buff, buffsize + NUM_BUFF_OVERSIZE_BYTES); + if (!new_buff) + { + free (read_buff); +- read_buff = (unsigned char *)limitMalloc(buffsize+3); ++ read_buff = (unsigned char *)limitMalloc(buffsize + NUM_BUFF_OVERSIZE_BYTES); + } + else + read_buff = new_buff; +@@ -6443,8 +6460,13 @@ loadImage(TIFF* in, struct image_data *image, struct dump_opts *dump, unsigned c + dump_info (dump->infile, dump->format, "", + "Bits per sample %"PRIu16", Samples per pixel %"PRIu16, bps, spp); + ++ if (scanlinesize > 0x0ffffffffULL) { ++ dump_info(dump->infile, dump->format, "loadImage", ++ "Attention: scanlinesize %"PRIu64" is larger than UINT32_MAX.\nFollowing dump might be wrong.", ++ scanlinesize); ++ } + for (i = 0; i < length; i++) +- dump_buffer(dump->infile, dump->format, 1, scanlinesize, ++ dump_buffer(dump->infile, dump->format, 1, (uint32_t)scanlinesize, + i, read_buff + (i * scanlinesize)); + } + return (0); +@@ -7464,13 +7486,13 @@ writeSingleSection(TIFF *in, TIFF *out, struct image_data *image, + if (TIFFGetField(in, TIFFTAG_NUMBEROFINKS, &ninks)) { + TIFFSetField(out, TIFFTAG_NUMBEROFINKS, ninks); + if (TIFFGetField(in, TIFFTAG_INKNAMES, &inknames)) { +- int inknameslen = strlen(inknames) + 1; ++ int inknameslen = (int)strlen(inknames) + 1; + const char* cp = inknames; + while (ninks > 1) { + cp = strchr(cp, '\0'); + if (cp) { + cp++; +- inknameslen += (strlen(cp) + 1); ++ inknameslen += ((int)strlen(cp) + 1); + } + ninks--; + } +@@ -7533,23 +7555,23 @@ createImageSection(uint32_t sectsize, unsigned char **sect_buff_ptr) + + if (!sect_buff) + { +- sect_buff = (unsigned char *)limitMalloc(sectsize); ++ sect_buff = (unsigned char *)limitMalloc(sectsize + NUM_BUFF_OVERSIZE_BYTES); + if (!sect_buff) + { + TIFFError("createImageSection", "Unable to allocate/reallocate section buffer"); + return (-1); + } +- _TIFFmemset(sect_buff, 0, sectsize); ++ _TIFFmemset(sect_buff, 0, sectsize + NUM_BUFF_OVERSIZE_BYTES); + } + else + { + if (prev_sectsize < sectsize) + { +- new_buff = _TIFFrealloc(sect_buff, sectsize); ++ new_buff = _TIFFrealloc(sect_buff, sectsize + NUM_BUFF_OVERSIZE_BYTES); + if (!new_buff) + { + _TIFFfree (sect_buff); +- sect_buff = (unsigned char *)limitMalloc(sectsize); ++ sect_buff = (unsigned char *)limitMalloc(sectsize + NUM_BUFF_OVERSIZE_BYTES); + } + else + sect_buff = new_buff; +@@ -7559,7 +7581,7 @@ createImageSection(uint32_t sectsize, unsigned char **sect_buff_ptr) + TIFFError("createImageSection", "Unable to allocate/reallocate section buffer"); + return (-1); + } +- _TIFFmemset(sect_buff, 0, sectsize); ++ _TIFFmemset(sect_buff, 0, sectsize + NUM_BUFF_OVERSIZE_BYTES); + } + } + +@@ -7590,17 +7612,17 @@ processCropSelections(struct image_data *image, struct crop_mask *crop, + cropsize = crop->bufftotal; + crop_buff = seg_buffs[0].buffer; + if (!crop_buff) +- crop_buff = (unsigned char *)limitMalloc(cropsize); ++ crop_buff = (unsigned char *)limitMalloc(cropsize + NUM_BUFF_OVERSIZE_BYTES); + else + { + prev_cropsize = seg_buffs[0].size; + if (prev_cropsize < cropsize) + { +- next_buff = _TIFFrealloc(crop_buff, cropsize); ++ next_buff = _TIFFrealloc(crop_buff, cropsize + NUM_BUFF_OVERSIZE_BYTES); + if (! next_buff) + { + _TIFFfree (crop_buff); +- crop_buff = (unsigned char *)limitMalloc(cropsize); ++ crop_buff = (unsigned char *)limitMalloc(cropsize + NUM_BUFF_OVERSIZE_BYTES); + } + else + crop_buff = next_buff; +@@ -7613,7 +7635,7 @@ processCropSelections(struct image_data *image, struct crop_mask *crop, + return (-1); + } + +- _TIFFmemset(crop_buff, 0, cropsize); ++ _TIFFmemset(crop_buff, 0, cropsize + NUM_BUFF_OVERSIZE_BYTES); + seg_buffs[0].buffer = crop_buff; + seg_buffs[0].size = cropsize; + +@@ -7693,17 +7715,17 @@ processCropSelections(struct image_data *image, struct crop_mask *crop, + cropsize = crop->bufftotal; + crop_buff = seg_buffs[i].buffer; + if (!crop_buff) +- crop_buff = (unsigned char *)limitMalloc(cropsize); ++ crop_buff = (unsigned char *)limitMalloc(cropsize + NUM_BUFF_OVERSIZE_BYTES); + else + { + prev_cropsize = seg_buffs[0].size; + if (prev_cropsize < cropsize) + { +- next_buff = _TIFFrealloc(crop_buff, cropsize); ++ next_buff = _TIFFrealloc(crop_buff, cropsize + NUM_BUFF_OVERSIZE_BYTES); + if (! next_buff) + { + _TIFFfree (crop_buff); +- crop_buff = (unsigned char *)limitMalloc(cropsize); ++ crop_buff = (unsigned char *)limitMalloc(cropsize + NUM_BUFF_OVERSIZE_BYTES); + } + else + crop_buff = next_buff; +@@ -7716,7 +7738,7 @@ processCropSelections(struct image_data *image, struct crop_mask *crop, + return (-1); + } + +- _TIFFmemset(crop_buff, 0, cropsize); ++ _TIFFmemset(crop_buff, 0, cropsize + NUM_BUFF_OVERSIZE_BYTES); + seg_buffs[i].buffer = crop_buff; + seg_buffs[i].size = cropsize; + +@@ -7832,24 +7854,24 @@ createCroppedImage(struct image_data *image, struct crop_mask *crop, + crop_buff = *crop_buff_ptr; + if (!crop_buff) + { +- crop_buff = (unsigned char *)limitMalloc(cropsize); ++ crop_buff = (unsigned char *)limitMalloc(cropsize + NUM_BUFF_OVERSIZE_BYTES); + if (!crop_buff) + { + TIFFError("createCroppedImage", "Unable to allocate/reallocate crop buffer"); + return (-1); + } +- _TIFFmemset(crop_buff, 0, cropsize); ++ _TIFFmemset(crop_buff, 0, cropsize + NUM_BUFF_OVERSIZE_BYTES); + prev_cropsize = cropsize; + } + else + { + if (prev_cropsize < cropsize) + { +- new_buff = _TIFFrealloc(crop_buff, cropsize); ++ new_buff = _TIFFrealloc(crop_buff, cropsize + NUM_BUFF_OVERSIZE_BYTES); + if (!new_buff) + { + free (crop_buff); +- crop_buff = (unsigned char *)limitMalloc(cropsize); ++ crop_buff = (unsigned char *)limitMalloc(cropsize + NUM_BUFF_OVERSIZE_BYTES); + } + else + crop_buff = new_buff; +@@ -7858,7 +7880,7 @@ createCroppedImage(struct image_data *image, struct crop_mask *crop, + TIFFError("createCroppedImage", "Unable to allocate/reallocate crop buffer"); + return (-1); + } +- _TIFFmemset(crop_buff, 0, cropsize); ++ _TIFFmemset(crop_buff, 0, cropsize + NUM_BUFF_OVERSIZE_BYTES); + } + } + +@@ -8156,13 +8178,13 @@ writeCroppedImage(TIFF *in, TIFF *out, struct image_data *image, + if (TIFFGetField(in, TIFFTAG_NUMBEROFINKS, &ninks)) { + TIFFSetField(out, TIFFTAG_NUMBEROFINKS, ninks); + if (TIFFGetField(in, TIFFTAG_INKNAMES, &inknames)) { +- int inknameslen = strlen(inknames) + 1; ++ int inknameslen = (int)strlen(inknames) + 1; + const char* cp = inknames; + while (ninks > 1) { + cp = strchr(cp, '\0'); + if (cp) { + cp++; +- inknameslen += (strlen(cp) + 1); ++ inknameslen += ((int)strlen(cp) + 1); + } + ninks--; + } +@@ -8547,13 +8569,13 @@ rotateContigSamples32bits(uint16_t rotation, uint16_t spp, uint16_t bps, uint32_ + } + else /* If we have a full buffer's worth, write it out */ + { +- bytebuff1 = (buff2 >> 56); ++ bytebuff1 = (uint8_t)(buff2 >> 56); + *dst++ = bytebuff1; +- bytebuff2 = (buff2 >> 48); ++ bytebuff2 = (uint8_t)(buff2 >> 48); + *dst++ = bytebuff2; +- bytebuff3 = (buff2 >> 40); ++ bytebuff3 = (uint8_t)(buff2 >> 40); + *dst++ = bytebuff3; +- bytebuff4 = (buff2 >> 32); ++ bytebuff4 = (uint8_t)(buff2 >> 32); + *dst++ = bytebuff4; + ready_bits -= 32; + +@@ -8622,12 +8644,13 @@ rotateImage(uint16_t rotation, struct image_data *image, uint32_t *img_width, + return (-1); + } + +- if (!(rbuff = (unsigned char *)limitMalloc(buffsize))) ++ /* Add 3 padding bytes for extractContigSamplesShifted32bits */ ++ if (!(rbuff = (unsigned char *)limitMalloc(buffsize + NUM_BUFF_OVERSIZE_BYTES))) + { +- TIFFError("rotateImage", "Unable to allocate rotation buffer of %1u bytes", buffsize); ++ TIFFError("rotateImage", "Unable to allocate rotation buffer of %1u bytes", buffsize + NUM_BUFF_OVERSIZE_BYTES); + return (-1); + } +- _TIFFmemset(rbuff, '\0', buffsize); ++ _TIFFmemset(rbuff, '\0', buffsize + NUM_BUFF_OVERSIZE_BYTES); + + ibuff = *ibuff_ptr; + switch (rotation) +@@ -9155,13 +9178,13 @@ reverseSamples32bits (uint16_t spp, uint16_t bps, uint32_t width, + } + else /* If we have a full buffer's worth, write it out */ + { +- bytebuff1 = (buff2 >> 56); ++ bytebuff1 = (uint8_t)(buff2 >> 56); + *dst++ = bytebuff1; +- bytebuff2 = (buff2 >> 48); ++ bytebuff2 = (uint8_t)(buff2 >> 48); + *dst++ = bytebuff2; +- bytebuff3 = (buff2 >> 40); ++ bytebuff3 = (uint8_t)(buff2 >> 40); + *dst++ = bytebuff3; +- bytebuff4 = (buff2 >> 32); ++ bytebuff4 = (uint8_t)(buff2 >> 32); + *dst++ = bytebuff4; + ready_bits -= 32; + +@@ -9252,12 +9275,13 @@ mirrorImage(uint16_t spp, uint16_t bps, uint16_t mirror, uint32_t width, uint32_ + { + case MIRROR_BOTH: + case MIRROR_VERT: +- line_buff = (unsigned char *)limitMalloc(rowsize); ++ line_buff = (unsigned char *)limitMalloc(rowsize + NUM_BUFF_OVERSIZE_BYTES); + if (line_buff == NULL) + { +- TIFFError ("mirrorImage", "Unable to allocate mirror line buffer of %1u bytes", rowsize); ++ TIFFError ("mirrorImage", "Unable to allocate mirror line buffer of %1u bytes", rowsize + NUM_BUFF_OVERSIZE_BYTES); + return (-1); + } ++ _TIFFmemset(line_buff, '\0', rowsize + NUM_BUFF_OVERSIZE_BYTES); + + dst = ibuff + (rowsize * (length - 1)); + for (row = 0; row < length / 2; row++) +@@ -9289,11 +9313,12 @@ mirrorImage(uint16_t spp, uint16_t bps, uint16_t mirror, uint32_t width, uint32_ + } + else + { /* non 8 bit per sample data */ +- if (!(line_buff = (unsigned char *)limitMalloc(rowsize + 1))) ++ if (!(line_buff = (unsigned char *)limitMalloc(rowsize + NUM_BUFF_OVERSIZE_BYTES))) + { + TIFFError("mirrorImage", "Unable to allocate mirror line buffer"); + return (-1); + } ++ _TIFFmemset(line_buff, '\0', rowsize + NUM_BUFF_OVERSIZE_BYTES); + bytes_per_sample = (bps + 7) / 8; + bytes_per_pixel = ((bps * spp) + 7) / 8; + if (bytes_per_pixel < (bytes_per_sample + 1)) +@@ -9305,7 +9330,7 @@ mirrorImage(uint16_t spp, uint16_t bps, uint16_t mirror, uint32_t width, uint32_ + { + row_offset = row * rowsize; + src = ibuff + row_offset; +- _TIFFmemset (line_buff, '\0', rowsize); ++ _TIFFmemset (line_buff, '\0', rowsize + NUM_BUFF_OVERSIZE_BYTES); + switch (shift_width) + { + case 1: if (reverseSamples16bits(spp, bps, width, src, line_buff)) |