CVE-2014-5206
Published: 13 August 2014
The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms via a "mount -o remount" command within a user namespace.
From the Ubuntu Security Team
Kenton Varda discovered a flaw with read-only bind mounds when used with user namespaces. An unprivileged local user could exploit this flaw to gain full write privileges to a mount that should be read only.
Notes
Author | Note |
---|---|
jdstrand | android kernels (goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 13.10 preview kernels android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.04 preview kernels |
apw | The existing break-fix appears to point to some self-tests break-fix: - db181ce011e3c033328608299cd6fac06ea50130 actual fix appears to be: a6138db815df5ee542d848318e5dae681590fccd |
jdstrand | linux-lts-saucy no longer receives official support |
Priority
Status
Package | Release | Status |
---|---|---|
linux-raspi2 Launchpad, Ubuntu, Debian |
vivid |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(3.17~rc1)
|
|
wily |
Not vulnerable
(4.2.0-1008.12)
|
|
linux Launchpad, Ubuntu, Debian |
trusty |
Released
(3.13.0-34.60)
|
utopic |
Not vulnerable
(3.16.0-8.13)
|
|
vivid |
Not vulnerable
(3.16.0-23.31)
|
|
wily |
Not vulnerable
(3.19.0-15.15)
|
|
lucid |
Not vulnerable
|
|
precise |
Not vulnerable
|
|
upstream |
Released
(3.17~rc1)
|
|
Patches: Introduced by 0c55cfc4166d9a0f38de779bd4d75a90afbe7734 Introduced by 0c55cfc4166d9a0f38de779bd4d75a90afbe7734 |
||
linux-armadaxp Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Not vulnerable
|
|
trusty |
Does not exist
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Does not exist
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-ec2 Launchpad, Ubuntu, Debian |
lucid |
Not vulnerable
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Does not exist
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
linux-flo Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Not vulnerable
|
|
vivid |
Not vulnerable
|
|
wily |
Not vulnerable
|
|
linux-fsl-imx51 Launchpad, Ubuntu, Debian |
lucid |
Ignored
(end of life)
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Does not exist
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Not vulnerable
|
|
vivid |
Not vulnerable
|
|
wily |
Not vulnerable
|
|
linux-grouper Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Ignored
(end of life)
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
linux-linaro-omap Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Ignored
(end of life)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Does not exist
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
linux-linaro-shared Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Ignored
(end of life)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Does not exist
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
linux-linaro-vexpress Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Ignored
(end of life)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Does not exist
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
linux-lts-quantal Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Not vulnerable
|
|
trusty |
Does not exist
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Does not exist
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
linux-lts-raring Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Ignored
(end of life, was needs-triage)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Does not exist
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
linux-lts-saucy Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Ignored
(end of life, was pending)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Does not exist
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-lts-trusty Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Released
(3.13.0-34.60~precise1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Does not exist
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was not-affected [3.16.0-25.33~14.04.2])
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Does not exist
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was not-affected [3.19.0-18.18~14.04.1])
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Does not exist
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
linux-maguro Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Does not exist
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
linux-mako Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Not vulnerable
|
|
vivid |
Not vulnerable
|
|
wily |
Not vulnerable
|
|
linux-manta Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Not vulnerable
|
|
vivid |
Not vulnerable
|
|
wily |
Not vulnerable
|
|
linux-mvl-dove Launchpad, Ubuntu, Debian |
lucid |
Ignored
(end of life)
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Does not exist
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
linux-qcm-msm Launchpad, Ubuntu, Debian |
lucid |
Ignored
(end of life)
|
precise |
Ignored
(end of life)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Does not exist
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
lucid |
Does not exist
|
precise |
Not vulnerable
|
|
trusty |
Does not exist
|
|
upstream |
Released
(3.17~rc1)
|
|
utopic |
Does not exist
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|