The do_change_type function in fs/namespace.c in the Linux kernel before 2.6.22 does not verify that the caller has the CAP_SYS_ADMIN capability, which allows local users to gain privileges or cause a denial of service by modifying the properties of a mountpoint.
| Software | From | Fixed in |
|---|---|---|
| debian / debian_linux | 4.0 | 4.0.x |
| linux / linux_kernel | - | 2.6.22 |
| opensuse / opensuse | 10.3 | 11.0.x |
| canonical / ubuntu_linux | 6.06 | 6.06.x |
| canonical / ubuntu_linux | 7.04 | 7.04.x |
| canonical / ubuntu_linux | 7.10 | 7.10.x |
| canonical / ubuntu_linux | 8.04 | 8.04.x |
| novell / suse_linux_enterprise_server | 10.0-sp1 | 10.0-sp1.x |
| novell / suse_linux_enterprise_server | 10.0-sp2 | 10.0-sp2.x |
| novell / suse_linux_enterprise_desktop | 10.0-sp1 | 10.0-sp1.x |
| novell / suse_linux_enterprise_desktop | 10.0-sp2 | 10.0-sp2.x |