GStreamer is a library for constructing graphs of media-handling components. A null pointer dereference vulnerability has been discovered in the gstmatroskademuxupdatetracks function within matroska-demux.c. The vulnerability occurs when the gstcapsisequal function is called with invalid caps values. If this happen, then in the function gstbuffergetsize the call to GSTBUFFERMEM_PTR can return a null pointer. Attempting to dereference the size field of this null pointer results in a null pointer dereference. This vulnerability is fixed in 1.24.10.