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CVE-2017-12192

Published: 11 October 2017

The keyctl_read_key function in security/keys/keyctl.c in the Key Management subcomponent in the Linux kernel before 4.13.5 does not properly consider that a key may be possessed but negatively instantiated, which allows local users to cause a denial of service (OOPS and system crash) via a crafted KEYCTL_READ operation.

From the Ubuntu security team

It was discovered that the key management subsystem in the Linux kernel did not properly restrict key reads on negatively instantiated keys. 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 (4.14~rc3)
Patches:
Introduced by 61ea0c0ba904a55f55317d850c1072ff7835ac92
Fixed by 37863c43b2c6464f252862bf2e9768264e961678
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-azure
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-euclid
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-gcp
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-kvm
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-oem
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (4.14~rc3)