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| author | JUN FANG <jun_fang@foxitsoftware.com> | 2015-04-11 09:33:23 -0700 |
|---|---|---|
| committer | JUN FANG <jun_fang@foxitsoftware.com> | 2015-04-11 12:35:13 -0700 |
| commit | e26a07588130eeaff120490a266a0a681705f006 (patch) | |
| tree | 47aad6ac260d2b04099b6a28e9a2dfce8ed341a2 /core/src/fpdfapi/fpdf_page | |
| parent | 7121cd914a52e1549014e40ac6489e1471480261 (diff) | |
| download | pdfium-e26a07588130eeaff120490a266a0a681705f006.tar.xz | |
Merge to XFA: Fix a heap buffer overflow issue in CPDF_CMap::GetNextChar
Add a check to make sure offset is less than the size of string in the function of GetNextChar().
BUG=471651
R=tsepez@chromium.org
Review URL: https://codereview.chromium.org/1067073003
Diffstat (limited to 'core/src/fpdfapi/fpdf_page')
| -rw-r--r-- | core/src/fpdfapi/fpdf_page/fpdf_page.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page.cpp index 590a01aa6d..ccdfb9fcbb 100644 --- a/core/src/fpdfapi/fpdf_page/fpdf_page.cpp +++ b/core/src/fpdfapi/fpdf_page/fpdf_page.cpp @@ -247,7 +247,7 @@ void CPDF_TextObject::SetSegments(const CFX_ByteString* pStrs, FX_FLOAT* pKernin FX_LPCSTR segment = pStrs[i]; int offset = 0, len = pStrs[i].GetLength(); while (offset < len) { - m_pCharCodes[index++] = pFont->GetNextChar(segment, offset); + m_pCharCodes[index++] = pFont->GetNextChar(segment, len, offset); } if (i != nsegs - 1) { m_pCharPos[index - 1] = pKerning[i]; @@ -256,7 +256,7 @@ void CPDF_TextObject::SetSegments(const CFX_ByteString* pStrs, FX_FLOAT* pKernin } } else { int offset = 0; - m_pCharCodes = (FX_DWORD*)(FX_UINTPTR)pFont->GetNextChar(pStrs[0], offset); + m_pCharCodes = (FX_DWORD*)(FX_UINTPTR)pFont->GetNextChar(pStrs[0], pStrs[0].GetLength(), offset); } } void CPDF_TextObject::SetText(const CFX_ByteString& str) |