Buffer underflow in redlight.sys in BufferZone 2.1 and 2.5 allows local users to cause a denial of service (crash) and possibly execute arbitrary code by sending a small buffer size value to the FsSetVolumeInformation IOCTL handler code with a FsSetDirectoryInformation subcode containing a large buffer.
Exploitability
AV:LAC:LAu:NImpact
C:CI:CA:C7.2/AV:L/AC:L/Au:N/C:C/I:C/A:C