diff options
| -rw-r--r-- | src/gui/image/qbmphandler.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/gui/image/qbmphandler.cpp b/src/gui/image/qbmphandler.cpp index b22e842202..30fa9e0c28 100644 --- a/src/gui/image/qbmphandler.cpp +++ b/src/gui/image/qbmphandler.cpp @@ -319,10 +319,16 @@ static bool read_dib_body(QDataStream &s, const BMP_INFOHDR &bi, int offset, int } } else if (comp == BMP_BITFIELDS && (nbits == 16 || nbits == 32)) { red_shift = calc_shift(red_mask); + if (((red_mask >> red_shift) + 1) == 0) + return false; red_scale = 256 / ((red_mask >> red_shift) + 1); green_shift = calc_shift(green_mask); + if (((green_mask >> green_shift) + 1) == 0) + return false; green_scale = 256 / ((green_mask >> green_shift) + 1); blue_shift = calc_shift(blue_mask); + if (((blue_mask >> blue_shift) + 1) == 0) + return false; blue_scale = 256 / ((blue_mask >> blue_shift) + 1); } else if (comp == BMP_RGB && (nbits == 24 || nbits == 32)) { blue_mask = 0x000000ff; |