Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-56134

Potential null pointer dereference in MFStream

XMLWordPrintable

    • Icon: Bug Bug
    • Resolution: Done
    • Icon: P2: Important P2: Important
    • 5.6.3, 5.7.2, 5.8.0
    • 5.6.0, 5.7.0, 5.8.0 Alpha
    • Multimedia
    • None
    • c6462eed99827154823e8e9ee07b8cf9311b518d

      There is a bug in MFStream::Seek regarding the parameter pqwCurrentPosition.
      Instead of checking against NULL, the function dereferences the pointer:

          if (*pqwCurrentPosition)
        *pqwCurrentPosition = pos;

      https://github.com/qt/qtmultimedia/blob/dev/src/plugins/wmf/mfstream.cpp#L239

      This will crash if NULL is passed, or fail to return the new position if the given pointer points to a zero-initialized value.

        For Gerrit Dashboard: QTBUG-56134
        # Subject Branch Project Status CR V
        174604,2 WMF: fix incorrect pointer dereference 5.6 qt/qtmultimedia Status: MERGED +2 0

            ylopes Yoann Lopes
            jspohr jspohr
            Votes:
            0 Vote for this issue
            Watchers:
            1 Start watching this issue

              Created:
              Updated:
              Resolved:

                There are no open Gerrit changes