CVE-2014-4014

Published: 23 June 2014

The capabilities implementation in the Linux kernel before 3.14.8 does not properly consider that namespaces are inapplicable to inodes, which allows local users to bypass intended chmod restrictions by first creating a user namespace, as demonstrated by setting the setgid bit on a file with group ownership of root.

From the Ubuntu Security Team

A flaw was discovered in the Linux kernel's implementation of user namespaces with respect to inode permissions. A local user could exploit this flaw by creating a user namespace to gain administrative privileges.

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

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

Priority

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	lucid	Not vulnerable
	precise	Not vulnerable
	saucy	Released (3.11.0-26.45)
	trusty	Released (3.13.0-35.62)
	upstream	Released (3.16~rc1)
	utopic	Not vulnerable (3.16.0-3.8)
	vivid	Not vulnerable (3.16.0-23.31)
	wily	Not vulnerable (3.19.0-15.15)
	xenial	Not vulnerable (4.2.0-16.19)
	yakkety	Not vulnerable (4.4.0-21.37)
	zesty	Not vulnerable (4.8.0-22.24)
	Patches: Introduced by 1a48e2ac034d47ed843081c4523b63c46b46888b Fixed by 23adbe12ef7d3d4195e80800ab36b37bee28cd03
linux-armadaxp Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist (precise was not-affected)
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	This package is not directly supported by the Ubuntu Security Team
linux-aws Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Not vulnerable (4.4.0-1002.2)
	upstream	Released (3.16~rc1)
	xenial	Not vulnerable (4.4.0-1001.10)
	yakkety	Does not exist
	zesty	Does not exist
linux-ec2 Launchpad, Ubuntu, Debian	lucid	Not vulnerable
	precise	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-flo Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	saucy	Does not exist
	trusty	Does not exist (trusty was ignored [was needed now end-of-life])
	upstream	Released (3.16~rc1)
	utopic	Not vulnerable
	vivid	Not vulnerable
	wily	Not vulnerable
	xenial	Not vulnerable
	yakkety	Not vulnerable
	zesty	Does not exist
linux-fsl-imx51 Launchpad, Ubuntu, Debian	lucid	Ignored (reached end-of-life, does not affect buildd)
	precise	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-gke Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	xenial	Not vulnerable (4.4.0-1003.3)
	yakkety	Does not exist
	zesty	Does not exist
linux-goldfish Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was ignored [was needed now end-of-life])
	upstream	Released (3.16~rc1)
	utopic	Not vulnerable
	vivid	Not vulnerable
	wily	Not vulnerable
	xenial	Not vulnerable
	yakkety	Not vulnerable
	zesty	Not vulnerable
linux-grouper Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (3.16~rc1)
	utopic	Ignored (reached end-of-life)
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	xenial	Not vulnerable (4.8.0-36.36~16.04.1)
	yakkety	Does not exist
	zesty	Does not exist
linux-hwe-edge Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	xenial	Not vulnerable (4.8.0-36.36~16.04.1)
	yakkety	Does not exist
	zesty	Does not exist
linux-linaro-omap Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist (precise was ignored [abandoned])
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-linaro-shared Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist (precise was ignored [abandoned])
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-linaro-vexpress Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist (precise was ignored [abandoned])
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-quantal Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist (precise was released [3.5.0-54.81~precise1])
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-raring Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist (precise was released [3.8.0-44.66~precise1])
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-saucy Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist (precise was released [3.11.0-26.45~precise1])
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-trusty Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Released (3.13.0-35.62~precise1)
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	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 (3.16~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	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 (3.16~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-wily Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist (trusty was not-affected [4.2.0-18.22~14.04.1])
	upstream	Released (3.16~rc1)
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Not vulnerable (4.4.0-13.29~14.04.1)
	upstream	Released (3.16~rc1)
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (3.16~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-mako Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was ignored [was needed now end-of-life])
	upstream	Released (3.16~rc1)
	utopic	Not vulnerable
	vivid	Not vulnerable
	wily	Not vulnerable
	xenial	Not vulnerable
	yakkety	Not vulnerable
	zesty	Does not exist
linux-manta Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was ignored [was needed now end-of-life])
	upstream	Released (3.16~rc1)
	utopic	Not vulnerable
	vivid	Not vulnerable
	wily	Not vulnerable
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-mvl-dove Launchpad, Ubuntu, Debian	lucid	Ignored (reached end-of-life)
	precise	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-qcm-msm Launchpad, Ubuntu, Debian	lucid	Ignored (abandoned)
	precise	Does not exist (precise was ignored [abandoned])
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	vivid	Does not exist
	wily	Not vulnerable (4.2.0-1008.12)
	xenial	Not vulnerable (4.2.0-1013.19)
	yakkety	Not vulnerable (4.4.0-1009.10)
	zesty	Not vulnerable (4.8.0-1013.15)
linux-snapdragon Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	wily	Does not exist
	xenial	Not vulnerable (4.4.0-1012.12)
	yakkety	Not vulnerable (4.4.0-1012.12)
	zesty	Not vulnerable (4.4.0-1029.32)
linux-ti-omap4 Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist (precise was not-affected)
	saucy	Ignored (reached end-of-life)
	trusty	Does not exist
	upstream	Released (3.16~rc1)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist

References

Bugs

https://launchpad.net/bugs/1329103

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