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CVE-2017-2618

Description

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. #### Notes Author| Note ---|--- [jdstrand](<https://launchpad.net/~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](<https://launchpad.net/~PHLin>) | this code is sick from 1da177e4, commit bb646cdb mentioned in the fix is where this flaw can cause problem.


Affected Package


OS OS Version Package Name Package Version
ubuntu 16.04 linux-mako any
ubuntu 16.04 linux-flo any
ubuntu 14.04 linux-lts-vivid any
ubuntu 14.04 linux-lts-xenial 4.4.0-67.88~14.04.1
ubuntu 16.04 linux-aws 4.4.0-1009.18
ubuntu 16.04 linux-hwe 4.10.0-27.30~16.04.2
ubuntu 18.04 linux-hwe-edge 4.18.0-8.9~18.04.1
ubuntu 16.04 linux-hwe-edge 4.10.0-27.30~16.04.2
ubuntu 16.04 linux-euclid any
ubuntu upstream linux-oem 4.10~rc8
ubuntu 14.04 linux 3.13.0-126.175
ubuntu upstream linux 4.10~rc8
ubuntu 16.04 linux 4.4.0-67.88
ubuntu upstream linux-armadaxp 4.10~rc8
ubuntu upstream linux-goldfish 4.10~rc8
ubuntu 16.04 linux-goldfish any
ubuntu upstream linux-linaro-omap 4.10~rc8
ubuntu upstream linux-linaro-shared 4.10~rc8
ubuntu upstream linux-linaro-vexpress 4.10~rc8
ubuntu upstream linux-lts-quantal 4.10~rc8
ubuntu upstream linux-lts-raring 4.10~rc8
ubuntu upstream linux-lts-saucy 4.10~rc8
ubuntu 12.04 linux-lts-trusty any
ubuntu upstream linux-lts-trusty 4.10~rc8
ubuntu upstream linux-manta 4.10~rc8
ubuntu upstream linux-qcm-msm 4.10~rc8
ubuntu upstream linux-raspi2 4.10~rc8
ubuntu 16.04 linux-raspi2 4.4.0-1048.55
ubuntu upstream linux-snapdragon 4.10~rc8
ubuntu 16.04 linux-snapdragon 4.4.0-1051.55
ubuntu 16.10 linux-snapdragon 4.4.0-1055.59
ubuntu 17.04 linux-snapdragon 4.4.0-1055.59
ubuntu upstream linux-ti-omap4 4.10~rc8

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