• Martin Storsjö's avatar
    aviobuf: Write new data at s->buf_end in fill_buffer · e360ada2
    Martin Storsjö authored
    In most cases, s->buf_ptr will be equal to s->buf_end when
    fill_buffer is called, but this may not always be the case, if
    we're seeking forward by reading (permitted by the short seek
    threshold).
    
    If fill_buffer is writing to s->buf_ptr instead of s->buf_end (when
    they aren't equal and s->buf_ptr is ahead of s->buffer), the data
    between s->buf_ptr and s->buf_end is overwritten, leading to
    inconsistent buffer content. This could return incorrect data if
    later seeking back into the area before the current s->buf_ptr.
    Signed-off-by: 's avatarLuca Barbato <lu_zero@gentoo.org>
    e360ada2
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