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CVE-2016-9755

Published: 28 December 2016

The netfilter subsystem in the Linux kernel before 4.9 mishandles IPv6 reassembly, which allows local users to cause a denial of service (integer overflow, out-of-bounds write, and GPF) or possibly have unspecified other impact via a crafted application that makes socket, connect, and writev system calls, related to net/ipv6/netfilter/nf_conntrack_reasm.c and net/ipv6/netfilter/nf_defrag_ipv6_hooks.c.

From the Ubuntu security team

Dmitry Vyukov, Andrey Konovalov, Florian Westphal, and Eric Dumazet discovered that the netfiler subsystem in the Linux kernel mishandled IPv6 packet reassembly. A local user could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Priority

Medium

CVSS 3 base score: 7.8

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
Patches:
Introduced by 029f7f3b8701cc7aca8bdb31f0c7edd6a479e357
Fixed by 9b57da0630c9fd36ed7a20fc0f98dc82cc0777fa
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-azure
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-euclid
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-gcp
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-kvm
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc8)

Notes

AuthorNote
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

References