The labeled networking implementation in Solaris Trusted Extensions in Sun Solaris 10 and OpenSolaris snv_39 through snv_67, when a labeled zone is in the installed state, allows remote authenticated users to bypass a Mandatory Access Control (MAC) policy and obtain access to the global zone.
The kernel in Sun Solaris 8 through 10 and OpenSolaris before snv_90 allows local users to bypass chroot, zones, and the Solaris Trusted Extensions multi-level security policy, and establish a covert communication channel, via unspecified vectors involving system calls.