CVE-2017-6347

Published: 01 March 2017

The ip_cmsg_recv_checksum function in net/ipv4/ip_sockglue.c in the Linux kernel before 4.10.1 has incorrect expectations about skb data layout, which allows local users to cause a denial of service (buffer over-read) or possibly have unspecified other impact via crafted system calls, as demonstrated by use of the MSG_MORE flag in conjunction with loopback UDP transmission.

From the Ubuntu security team

Andrey Konovalov discovered that the IP layer in the Linux kernel made improper assumptions about internal data layout when performing checksums. A local attacker 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 (4.11~rc1)
Patches:
Introduced by ad6f939ab193750cc94a265f58e007fb598c97b7
Fixed by ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-azure
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-euclid
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-gcp
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-kvm
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-oem
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (4.11~rc1)

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