XFree86 3.3.x and 4.0 allows a user to cause a denial of service via a negative counter value in a malformed TCP packet that is sent to port 6000.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| X11r6 | Xfree86_project | 3.3.5 (including) | 3.3.5 (including) |
| X11r6 | Xfree86_project | 3.3.6 (including) | 3.3.6 (including) |
| X11r6 | Xfree86_project | 4.0 (including) | 4.0 (including) |