Linux VServer 1.27 and earlier, 1.3.9 and earlier, and 1.9.1 and earlier shares /proc permissions across all virtual and host servers, which allows local users with the ability to set permissions in /proc to obtain system information or cause a denial of service on other virtual servers or the host server.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux-vserver | Vserver | 1.3.0 (including) | 1.3.0 (including) |
| Linux-vserver | Vserver | 1.3.1 (including) | 1.3.1 (including) |
| Linux-vserver | Vserver | 1.3.2 (including) | 1.3.2 (including) |
| Linux-vserver | Vserver | 1.3.3 (including) | 1.3.3 (including) |
| Linux-vserver | Vserver | 1.3.4 (including) | 1.3.4 (including) |
| Linux-vserver | Vserver | 1.3.5 (including) | 1.3.5 (including) |
| Linux-vserver | Vserver | 1.3.6 (including) | 1.3.6 (including) |
| Linux-vserver | Vserver | 1.3.7 (including) | 1.3.7 (including) |
| Linux-vserver | Vserver | 1.3.8 (including) | 1.3.8 (including) |
| Linux-vserver | Vserver | 1.3.9 (including) | 1.3.9 (including) |
| Linux-vserver | Vserver | 1.9.1 (including) | 1.9.1 (including) |
| Linux-vserver | Vserver | 1.20 (including) | 1.20 (including) |
| Linux-vserver | Vserver | 1.21 (including) | 1.21 (including) |
| Linux-vserver | Vserver | 1.22 (including) | 1.22 (including) |
| Linux-vserver | Vserver | 1.23 (including) | 1.23 (including) |
| Linux-vserver | Vserver | 1.24 (including) | 1.24 (including) |
| Linux-vserver | Vserver | 1.25 (including) | 1.25 (including) |
| Linux-vserver | Vserver | 1.26 (including) | 1.26 (including) |
| Linux-vserver | Vserver | 1.27 (including) | 1.27 (including) |