diff options
| -rw-r--r-- | src/kernel/qimage.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/kernel/qimage.cpp b/src/kernel/qimage.cpp index a22b744a9..ab42e188b 100644 --- a/src/kernel/qimage.cpp +++ b/src/kernel/qimage.cpp @@ -4716,10 +4716,16 @@ bool read_dib( TQDataStream& s, int offset, int startpos, TQImage& image ) if ( (TQ_ULONG)d->readBlock( (char *)&blue_mask, sizeof(blue_mask) ) != sizeof(blue_mask) ) return FALSE; 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; |