CVE-2017-2618
Published: 9 February 2017
A flaw was found in the Linux kernel's handling of clearing SELinux attributes on /proc/pid/attr files before 4.9.10. An empty (null) write to this file can crash the system by causing the system to attempt to access unmapped kernel memory.
From the Ubuntu Security Team
It was discovered that SELinux in the Linux kernel did not properly handle empty writes to /proc/pid/attr. A local attacker could use this to cause a denial of service (system crash).
Notes
Author | Note |
---|---|
jdstrand | android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.10 and earlier preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support |
PHLin | this code is sick from 1da177e4, commit bb646cdb mentioned in the fix is where this flaw can cause problem. |
Priority
Status
Package | Release | Status |
---|---|---|
linux Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.10.0-19.21)
|
bionic |
Not vulnerable
(4.13.0-16.19)
|
|
precise |
Ignored
(was needed ESM criteria)
|
|
trusty |
Released
(3.13.0-126.175)
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Released
(4.4.0-67.88)
|
|
yakkety |
Ignored
(reached end-of-life)
|
|
zesty |
Not vulnerable
(4.10.0-8.10)
|
|
Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
||
linux-armadaxp Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
(precise was not-affected)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
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 |
artful |
Does not exist
|
bionic |
Not vulnerable
(4.15.0-1001.1)
|
|
precise |
Does not exist
|
|
trusty |
Not vulnerable
(4.4.0-1002.2)
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Released
(4.4.0-1009.18)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-azure Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Not vulnerable
(4.15.0-1002.2)
|
|
precise |
Does not exist
|
|
trusty |
Not vulnerable
(4.15.0-1023.24~14.04.1)
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Not vulnerable
(4.11.0-1009.9)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-euclid Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Ignored
(was needed ESM criteria)
|
|
zesty |
Does not exist
|
|
linux-flo Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Ignored
(was needed now end-of-life)
|
|
yakkety |
Not vulnerable
|
|
zesty |
Does not exist
|
|
linux-gcp Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Not vulnerable
(4.15.0-1001.1)
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Not vulnerable
(4.10.0-1004.4)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-gke Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Not vulnerable
(4.4.0-1003.3)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Ignored
(was needed now end-of-life)
|
|
yakkety |
Ignored
(reached end-of-life)
|
|
zesty |
Ignored
(reached end-of-life)
|
|
linux-grouper Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-hwe Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Not vulnerable
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Released
(4.10.0-27.30~16.04.2)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Released
(4.18.0-8.9~18.04.1)
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Released
(4.10.0-27.30~16.04.2)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-kvm Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Not vulnerable
(4.15.0-1002.2)
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Not vulnerable
(4.4.0-1004.9)
|
|
zesty |
Does not exist
|
|
linux-linaro-omap Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
(precise was ignored [abandoned])
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-linaro-shared Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
(precise was ignored [abandoned])
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-linaro-vexpress Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
(precise was ignored [abandoned])
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-quantal Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
(precise was ignored [end-of-life])
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-lts-raring Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
(precise was ignored [end-of-life])
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-saucy Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
(precise was ignored [end-of-life])
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-lts-trusty Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Released
(3.13.0-126.175~precise1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [out of standard support])
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [was needed now end-of-life])
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [out of standard support])
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Released
(4.4.0-67.88~14.04.1)
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-maguro Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-mako Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Ignored
(was needed now end-of-life)
|
|
yakkety |
Not vulnerable
|
|
zesty |
Does not exist
|
|
linux-manta Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored)
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-oem Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Not vulnerable
(4.15.0-1002.3)
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Not vulnerable
(4.13.0-1008.9)
|
|
zesty |
Does not exist
|
|
linux-qcm-msm Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
(precise was ignored [abandoned])
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.10.0-1004.6)
|
bionic |
Not vulnerable
(4.13.0-1005.5)
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Released
(4.4.0-1048.55)
|
|
yakkety |
Ignored
(reached end-of-life)
|
|
zesty |
Not vulnerable
(4.10.0-1001.3)
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.4.0-1055.59)
|
bionic |
Not vulnerable
|
|
precise |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Released
(4.4.0-1051.55)
|
|
yakkety |
Released
(4.4.0-1055.59)
|
|
zesty |
Released
(4.4.0-1055.59)
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
precise |
Does not exist
(precise was not-affected)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.10~rc8)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.5 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |