libsepol: use-after-free in __cil_verify_classperms()

The CIL compiler in SELinux 3.2 has a use-after-free in cilverifyclassperms called from cilverifyclasspermission and cilpreverifyhelper...

The vulnerability of the __cil_verify_classperms() function in the SELinux access control system allows a perpetrator to trigger a service failure.

The vulnerability of the cilverifyclassperms function in the SELinux access control system is related to the use of memory after it is freed. Exploiting this vulnerability could allow an attacker to trigger a service failure...