fs/proc/base.c in the Linux kernel before 2.6.39.4 does not properly restrict access to /proc/#####/io files, which allows local users to obtain sensitive I/O statistics by polling a file, as demonstrated by discovering the length of another users password.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux_kernel | Linux | * | 2.6.39.3 (including) |
| Linux_kernel | Linux | 2.6.39 (including) | 2.6.39 (including) |
| Linux_kernel | Linux | 2.6.39-rc1 (including) | 2.6.39-rc1 (including) |
| Linux_kernel | Linux | 2.6.39-rc2 (including) | 2.6.39-rc2 (including) |
| Linux_kernel | Linux | 2.6.39-rc3 (including) | 2.6.39-rc3 (including) |
| Linux_kernel | Linux | 2.6.39-rc4 (including) | 2.6.39-rc4 (including) |
| Linux_kernel | Linux | 2.6.39-rc5 (including) | 2.6.39-rc5 (including) |
| Linux_kernel | Linux | 2.6.39-rc6 (including) | 2.6.39-rc6 (including) |
| Linux_kernel | Linux | 2.6.39-rc7 (including) | 2.6.39-rc7 (including) |
| Linux_kernel | Linux | 2.6.39.1 (including) | 2.6.39.1 (including) |
| Linux_kernel | Linux | 2.6.39.2 (including) | 2.6.39.2 (including) |
| Red Hat Enterprise Linux 5 | RedHat | kernel-0:2.6.18-274.3.1.el5 | * |
| Red Hat Enterprise Linux 5.6 EUS - Server Only | RedHat | kernel-0:2.6.18-238.31.1.el5 | * |
| Red Hat Enterprise Linux 6 | RedHat | kernel-0:2.6.32-131.12.1.el6 | * |
| Red Hat Enterprise MRG 2 | RedHat | kernel-rt-0:2.6.33.9-rt31.75.el6rt | * |
| Linux | Ubuntu | hardy | * |
| Linux | Ubuntu | lucid | * |
| Linux | Ubuntu | maverick | * |
| Linux | Ubuntu | natty | * |
| Linux | Ubuntu | upstream | * |
| Linux-ec2 | Ubuntu | lucid | * |
| Linux-ec2 | Ubuntu | maverick | * |
| Linux-ec2 | Ubuntu | upstream | * |
| Linux-fsl-imx51 | Ubuntu | lucid | * |
| Linux-fsl-imx51 | Ubuntu | upstream | * |
| Linux-lts-backport-maverick | Ubuntu | lucid | * |
| Linux-lts-backport-maverick | Ubuntu | upstream | * |
| Linux-lts-backport-natty | Ubuntu | lucid | * |
| Linux-lts-backport-natty | Ubuntu | upstream | * |
| Linux-lts-backport-oneiric | Ubuntu | upstream | * |
| Linux-mvl-dove | Ubuntu | lucid | * |
| Linux-mvl-dove | Ubuntu | maverick | * |
| Linux-mvl-dove | Ubuntu | upstream | * |
| Linux-ti-omap4 | Ubuntu | maverick | * |
| Linux-ti-omap4 | Ubuntu | natty | * |
| Linux-ti-omap4 | Ubuntu | upstream | * |