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CVE-2017-2636

Description

Race condition in drivers/tty/n_hdlc.c in the Linux kernel through 4.10.1 allows local users to gain privileges or cause a denial of service (double free) by setting the HDLC line discipline. #### 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 [tyhicks](<https://launchpad.net/~tyhicks>) | all of our kernels are affected as CONFIG_N_HDLC=m is set in all releases


Affected Package


OS OS Version Package Name Package Version
ubuntu 12.04 linux 3.2.0-124.167
ubuntu 14.04 linux 3.13.0-112.159
ubuntu 16.04 linux 4.4.0-66.87
ubuntu 16.10 linux 4.8.0-41.44
ubuntu 12.04 linux-armadaxp 3.2.0-1685.112
ubuntu 16.04 linux-aws 4.4.0-1007.16
ubuntu 16.04 linux-gke 4.4.0-1005.6
ubuntu 16.04 linux-hwe 4.8.0-41.44~16.04.1
ubuntu 16.04 linux-hwe-edge 4.8.0-41.44~16.04.1
ubuntu 12.04 linux-lts-trusty 3.13.0-112.159~precise1
ubuntu 14.04 linux-lts-vivid any
ubuntu 14.04 linux-lts-xenial 4.4.0-66.87~14.04.1
ubuntu 16.04 linux-raspi2 4.4.0-1046.53
ubuntu 16.10 linux-raspi2 4.8.0-1028.31
ubuntu 16.04 linux-snapdragon 4.4.0-1050.54
ubuntu 16.10 linux-snapdragon 4.4.0-1050.54
ubuntu 12.04 linux-ti-omap4 3.2.0-1502.129
ubuntu upstream linux-ti-omap4 4.11~rc2

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