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author | Tom Sepez <tsepez@chromium.org> | 2015-05-18 14:18:08 -0700 |
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committer | Tom Sepez <tsepez@chromium.org> | 2015-05-18 14:18:08 -0700 |
commit | 31b3a2b31a50f83ed100e01485013fd871399f45 (patch) | |
tree | aeece5130880a698b56eec044d73925e7e5ae7f3 /core/src/fxcodec/codec/fx_codec_jpeg.cpp | |
parent | a88e3a16ae711f6523ad3a40a08d774b72adc9eb (diff) | |
download | pdfium-31b3a2b31a50f83ed100e01485013fd871399f45.tar.xz |
Add safe FX_Alloc2D() macro
This avoids unchecked multiplications when computing a size argument
to malloc(). Such an overflow is very scary, and can result in
exploitable bugs.
Along the way, kill off some return checks, since we know this can't
return NULL.
R=thestig@chromium.org
Review URL: https://codereview.chromium.org/1143663004
Diffstat (limited to 'core/src/fxcodec/codec/fx_codec_jpeg.cpp')
-rw-r--r-- | core/src/fxcodec/codec/fx_codec_jpeg.cpp | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/core/src/fxcodec/codec/fx_codec_jpeg.cpp b/core/src/fxcodec/codec/fx_codec_jpeg.cpp index d4c9926254..60575d4e34 100644 --- a/core/src/fxcodec/codec/fx_codec_jpeg.cpp +++ b/core/src/fxcodec/codec/fx_codec_jpeg.cpp @@ -153,10 +153,7 @@ static void _JpegEncode(const CFX_DIBSource* pSource, FX_LPBYTE& dest_buf, FX_ST } FX_LPBYTE line_buf = NULL; if (nComponents > 1) { - line_buf = FX_Alloc(FX_BYTE, width * nComponents); - if (line_buf == NULL) { - return; - } + line_buf = FX_Alloc2D(FX_BYTE, width, nComponents); } jpeg_set_defaults(&cinfo); if(quality != 75) { |