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

CVSS 3 base score: 5.5

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	artful	Released (4.13.0-17.20)
	precise	Not vulnerable
	trusty	Released (3.13.0-142.191)
	upstream	Released (4.14~rc3)
	xenial	Released (4.4.0-98.121)
	zesty	Ignored (was pending [4.10.0-43.47] now end-of-life)
linux-armadaxp Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist
linux-aws Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Not vulnerable (4.4.0-1002.2)
	upstream	Released (4.14~rc3)
	xenial	Released (4.4.0-1039.48)
	zesty	Does not exist
linux-azure Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Not vulnerable (4.15.0-1023.24~14.04.1)
	upstream	Released (4.14~rc3)
	xenial	Released (4.13.0-1005.7)
	zesty	Does not exist
linux-euclid Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Ignored (was needed ESM criteria)
	zesty	Does not exist
linux-flo Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc3)
	xenial	Ignored (abandoned)
	zesty	Does not exist
linux-gcp Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Released (4.13.0-1002.5)
	zesty	Does not exist
linux-gke Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Released (4.4.0-1033.33)
	zesty	Does not exist
linux-goldfish Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc3)
	xenial	Not vulnerable
	zesty	Not vulnerable
linux-grouper Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Released (4.13.0-26.29~16.04.2)
	zesty	Does not exist
linux-hwe-edge Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Released (4.13.0-26.29~16.04.2)
	zesty	Does not exist
linux-kvm Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Released (4.4.0-1009.14)
	zesty	Does not exist
linux-linaro-omap Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist
linux-linaro-shared Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist
linux-linaro-vexpress Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-quantal Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Ignored (end-of-life)
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-raring Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Ignored (end-of-life)
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-saucy Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Ignored (end-of-life)
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-trusty Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Released (3.13.0-142.191~precise1)
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-utopic Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [out of standard support])
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-vivid Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [was needs-triage now end-of-life])
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-wily Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [out of standard support])
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Released (4.4.0-98.121~14.04.1)
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist
linux-mako Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc3)
	xenial	Ignored (abandoned)
	zesty	Does not exist
linux-manta Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist
linux-oem Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Not vulnerable (4.13.0-1008.9)
	zesty	Does not exist
linux-qcm-msm Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	artful	Released (4.13.0-1006.6)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Released (4.4.0-1076.84)
	zesty	Ignored (was pending [4.10.0-1024.27] now end-of-life)
linux-snapdragon Launchpad, Ubuntu, Debian	artful	Released (4.4.0-1078.83)
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Released (4.4.0-1078.83)
	zesty	Released (4.4.0-1078.83)
linux-ti-omap4 Launchpad, Ubuntu, Debian	artful	Does not exist
	precise	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc3)
	xenial	Does not exist
	zesty	Does not exist

References

Bugs

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