driver/subprocs.c in XScreenSaver before 5.34 does not properly perform an internal consistency check, which allows physically proximate attackers to bypass the lock screen by hot swapping monitors.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ubuntu_linux | Canonical | 12.04 (including) | 12.04 (including) |
| Xscreensaver | Ubuntu | precise | * |
| Xscreensaver | Ubuntu | trusty | * |
| Xscreensaver | Ubuntu | upstream | * |
| Xscreensaver | Ubuntu | vivid | * |
| Xscreensaver | Ubuntu | wily | * |