init_dev in tty_io.c in the Red Hat backport of NPTL to Red Hat Enterprise Linux 3 does not properly clear controlling ttys in multi-threaded applications, which allows local users to cause a denial of service (crash) and possibly gain tty access via unknown attack vectors that trigger an access of a pointer to a freed structure.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Enterprise_linux | Redhat | 3.0 (including) | 3.0 (including) |
| Enterprise_linux_desktop | Redhat | 3.0 (including) | 3.0 (including) |
| Red Hat Enterprise Linux 3 | RedHat | kernel-0:2.4.21-27.0.4.EL | * |