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CVE-2016-4470

Published: 27 June 2016

The key_reject_and_link function in security/keys/key.c in the Linux kernel through 4.6.3 does not ensure that a certain data structure is initialized, which allows local users to cause a denial of service (system crash) via vectors involving a crafted keyctl request2 command.

From the Ubuntu security team

It was discovered that the keyring implementation in the Linux kernel did not ensure a data structure was initialized before referencing it after an error condition occurred. A local attacker could use this to cause a denial of service (system crash).

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
Patches:
Introduced by f70e2e06196ad4c1c762037da2f75354f6c16b81
Fixed by 38327424b40bcebe2de92d07312c89360ac9229a
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (4.7~rc4)