CVE-2011-2495

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 user's password.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
2.1 UNKNOWN
LOCAL
LOW
AV:L/AC:L/Au:N/C:P/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 22%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
𝑥
≤ 2.6.39.3
linuxlinux_kernel
2.6.39
linuxlinux_kernel
2.6.39:rc1
linuxlinux_kernel
2.6.39:rc2
linuxlinux_kernel
2.6.39:rc3
linuxlinux_kernel
2.6.39:rc4
linuxlinux_kernel
2.6.39:rc5
linuxlinux_kernel
2.6.39:rc6
linuxlinux_kernel
2.6.39:rc7
linuxlinux_kernel
2.6.39.1
linuxlinux_kernel
2.6.39.2
𝑥
= Vulnerable software versions
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
linux
hardy
Fixed 2.6.24-29.95
released
lucid
Fixed 2.6.32-35.78
released
maverick
Fixed 2.6.35-30.61
released
natty
Fixed 2.6.38-13.52
released
oneiric
not-affected
linux-ec2
hardy
dne
lucid
Fixed 2.6.32-319.39
released
maverick
ignored
natty
dne
oneiric
dne
linux-fsl-imx51
hardy
dne
lucid
Fixed 2.6.31-611.29
released
maverick
dne
natty
dne
oneiric
dne
linux-lts-backport-maverick
hardy
dne
lucid
Fixed 2.6.35-30.61~lucid1
released
maverick
dne
natty
dne
oneiric
dne
linux-lts-backport-natty
hardy
dne
lucid
Fixed 2.6.38-13.52~lucid1
released
maverick
dne
natty
dne
oneiric
dne
linux-lts-backport-oneiric
hardy
dne
lucid
not-affected
maverick
dne
natty
dne
oneiric
dne
linux-mvl-dove
hardy
dne
lucid
Fixed 2.6.32-219.37
released
maverick
Fixed 2.6.32-419.37
released
natty
dne
oneiric
dne
linux-ti-omap4
hardy
dne
lucid
dne
maverick
Fixed 2.6.35-903.26
released
natty
Fixed 2.6.38-1209.17
released
oneiric
not-affected
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
kernel
RHEL 6
0:2.6.32-131.12.1.el6
fixed
kernel-bootwrapper
RHEL 6
0:2.6.32-131.12.1.el6
fixed
kernel-debug
RHEL 6
0:2.6.32-131.12.1.el6
fixed
kernel-debug-devel
RHEL 6
0:2.6.32-131.12.1.el6
fixed
kernel-devel
RHEL 6
0:2.6.32-131.12.1.el6
fixed
kernel-doc
RHEL 6
0:2.6.32-131.12.1.el6
fixed
kernel-firmware
RHEL 6
0:2.6.32-131.12.1.el6
fixed
kernel-headers
RHEL 6
0:2.6.32-131.12.1.el6
fixed
kernel-kdump
RHEL 6
0:2.6.32-131.12.1.el6
fixed
kernel-kdump-devel
RHEL 6
0:2.6.32-131.12.1.el6
fixed
perf
RHEL 6
0:2.6.32-131.12.1.el6
fixed
Common Weakness Enumeration
References
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.4
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1d1221f375c94ef961ba8574ac4f85c8870ddd51
http://rhn.redhat.com/errata/RHSA-2011-1212.html
http://www.openwall.com/lists/oss-security/2011/06/27/1
https://bugzilla.redhat.com/show_bug.cgi?id=716825
https://github.com/torvalds/linux/commit/1d1221f375c94ef961ba8574ac4f85c8870ddd51
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.4
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1d1221f375c94ef961ba8574ac4f85c8870ddd51
http://rhn.redhat.com/errata/RHSA-2011-1212.html
http://www.openwall.com/lists/oss-security/2011/06/27/1
https://bugzilla.redhat.com/show_bug.cgi?id=716825
https://github.com/torvalds/linux/commit/1d1221f375c94ef961ba8574ac4f85c8870ddd51