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| author | dsinclair <dsinclair@chromium.org> | 2016-08-08 11:10:48 -0700 |
|---|---|---|
| committer | Commit bot <commit-bot@chromium.org> | 2016-08-08 11:10:48 -0700 |
| commit | b1b8668ef12ae4e7fcb5fbf3f01fa623a319a092 (patch) | |
| tree | 061370a217f3563a50391421e4884e09dab7d754 /core/fxcodec/jbig2/JBig2_Image.cpp | |
| parent | 33c4cdb4efbacb73151c982549151ea4e545eff8 (diff) | |
| download | pdfium-b1b8668ef12ae4e7fcb5fbf3f01fa623a319a092.tar.xz | |
Check if image width or height are zero before proceeding.
If the width of the CJBig2_Image is set to 0 then the stride_pixels will be
zero and when we divide we'll get a floating point exception.
If the width or height are zero then we can exit early without proceeding with
the rest of the constructor.
BUG=chromium:635008
Review-Url: https://codereview.chromium.org/2222843004
Diffstat (limited to 'core/fxcodec/jbig2/JBig2_Image.cpp')
| -rw-r--r-- | core/fxcodec/jbig2/JBig2_Image.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/core/fxcodec/jbig2/JBig2_Image.cpp b/core/fxcodec/jbig2/JBig2_Image.cpp index b8cb21165b..2071221cd1 100644 --- a/core/fxcodec/jbig2/JBig2_Image.cpp +++ b/core/fxcodec/jbig2/JBig2_Image.cpp @@ -23,7 +23,7 @@ CJBig2_Image::CJBig2_Image(int32_t w, int32_t h) m_nHeight(0), m_nStride(0), m_bOwnsBuffer(true) { - if (w < 0 || h < 0 || w > kMaxImagePixels) + if (w <= 0 || h <= 0 || w > kMaxImagePixels) return; int32_t stride_pixels = (w + 31) & ~31; |