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CVE-2011-1020

Published: 28 February 2011

The proc filesystem implementation in the Linux kernel 2.6.37 and earlier does not restrict access to the /proc directory tree of a process after this process performs an exec of a setuid program, which allows local users to obtain sensitive information or cause a denial of service via open, lseek, read, and write system calls.

From the Ubuntu security team

It was discovered that the /proc filesystem did not correctly handle permission changes when programs executed. A local attacker could hold open files to examine details about programs running with higher privileges, potentially increasing the chances of exploiting additional vulnerabilities.

Priority

Low

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy
Released (2.6.24-29.93)
karmic Ignored

lucid
Released (2.6.32-34.73)
maverick
Released (2.6.35-30.57)
natty
Released (2.6.38-11.49)
oneiric Not vulnerable
(2.6.39-0.1)
upstream
Released (2.6.39~rc1)
linux-ec2
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy Does not exist

karmic Ignored
(reached end-of-life)
lucid
Released (2.6.32-318.37)
maverick Ignored
(binary supplied by "linux" now)
natty Does not exist

oneiric Does not exist

upstream
Released (2.6.39~rc1)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy Does not exist

karmic Ignored
(reached end-of-life)
lucid
Released (2.6.31-610.27)
maverick Does not exist

natty Does not exist

oneiric Does not exist

upstream
Released (2.6.39~rc1)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy Does not exist

karmic Does not exist

lucid
Released (2.6.35-30.57~lucid1)
maverick Does not exist

natty Does not exist

oneiric Does not exist

upstream
Released (2.6.39~rc1)
linux-lts-backport-natty
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid
Released (2.6.38-11.49~lucid1)
maverick Does not exist

natty Does not exist

oneiric Does not exist

upstream
Released (2.6.39~rc1)
linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Not vulnerable

maverick Does not exist

natty Does not exist

oneiric Does not exist

upstream
Released (2.6.39~rc1)
linux-mvl-dove
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy Does not exist

karmic Ignored
(abandonded branch)
lucid
Released (2.6.32-218.35)
maverick
Released (2.6.32-418.35)
natty Does not exist

oneiric Does not exist

upstream
Released (2.6.39~rc1)
linux-ti-omap4
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy Does not exist

karmic Does not exist

lucid Does not exist

maverick
Released (2.6.35-903.23)
natty
Released (2.6.38-1209.15)
oneiric Not vulnerable
(3.0.0-1204.9)
upstream
Released (2.6.39~rc1)