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CVE-2016-6828

Description

The tcp_check_send_head function in include/net/tcp.h in the Linux kernel before 4.7.5 does not properly maintain certain SACK state after a failed data copy, which allows local users to cause a denial of service (tcp_xmit_retransmit_queue use-after-free and system crash) via a crafted SACK option. #### 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


Affected Package


OS OS Version Package Name Package Version
ubuntu 14.04 linux 3.13.0-98.145
ubuntu upstream linux 4.8~rc5
ubuntu 16.04 linux 4.4.0-42.62
ubuntu upstream linux-armadaxp 4.8~rc5
ubuntu upstream linux-aws 4.8~rc5
ubuntu upstream linux-flo 4.8~rc5
ubuntu upstream linux-gke 4.8~rc5
ubuntu upstream linux-goldfish 4.8~rc5
ubuntu upstream linux-grouper 4.8~rc5
ubuntu upstream linux-hwe 4.8~rc5
ubuntu upstream linux-hwe-edge 4.8~rc5
ubuntu upstream linux-linaro-omap 4.8~rc5
ubuntu upstream linux-linaro-shared 4.8~rc5
ubuntu upstream linux-linaro-vexpress 4.8~rc5
ubuntu upstream linux-lts-quantal 4.8~rc5
ubuntu upstream linux-lts-raring 4.8~rc5
ubuntu upstream linux-lts-saucy 4.8~rc5
ubuntu upstream linux-lts-trusty 4.8~rc5
ubuntu upstream linux-lts-utopic 4.8~rc5
ubuntu 14.04 linux-lts-vivid trusty was released [3.19.0-71.79~14.04.1]
ubuntu upstream linux-lts-vivid 4.8~rc5
ubuntu upstream linux-lts-wily 4.8~rc5
ubuntu 14.04 linux-lts-xenial 4.4.0-42.62~14.04.1
ubuntu upstream linux-lts-xenial 4.8~rc5
ubuntu upstream linux-maguro 4.8~rc5
ubuntu upstream linux-mako 4.8~rc5
ubuntu upstream linux-manta 4.8~rc5
ubuntu upstream linux-qcm-msm 4.8~rc5
ubuntu upstream linux-raspi2 4.8~rc5
ubuntu 16.04 linux-raspi2 4.4.0-1027.33
ubuntu upstream linux-snapdragon 4.8~rc5
ubuntu 16.04 linux-snapdragon 4.4.0-1030.33
ubuntu upstream linux-ti-omap4 4.8~rc5

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