The compat_sys_mount function in fs/compat.c in Linux kernel 2.6.20 and earlier allows local users to cause a denial of service (NULL pointer dereference and oops) by mounting a smbfs file system in compatibility mode (mount -t smbfs).
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux_kernel | Linux | * | 2.6.20 (including) |
| Red Hat Enterprise Linux 4 | RedHat | kernel-0:2.6.9-55.0.2.EL | * |
| Red Hat Enterprise Linux 5 | RedHat | kernel-0:2.6.18-8.1.6.el5 | * |
| Linux-source-2.6.15 | Ubuntu | dapper | * |
| Linux-source-2.6.17 | Ubuntu | edgy | * |