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CVE-2016-9313

Published: 27 November 2016

security/keys/big_key.c in the Linux kernel before 4.8.7 mishandles unsuccessful crypto registration in conjunction with successful key-type registration, which allows local users to cause a denial of service (NULL pointer dereference and panic) or possibly have unspecified other impact via a crafted application that uses the big_key data type.

From the Ubuntu Security Team

It was discovered that the keyring implementation in the Linux kernel improperly handled crypto registration in conjunction with successful key- type registration. A local attacker could use this to cause a denial of service (system crash).

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

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
linux-aws
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Not vulnerable

xenial Not vulnerable

yakkety Does not exist

zesty Does not exist

upstream
Released (4.9~rc3)
linux-flo
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
xenial Not vulnerable

yakkety Not vulnerable

zesty Does not exist

upstream
Released (4.9~rc3)
linux-gke
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

xenial Not vulnerable

yakkety Does not exist

zesty Does not exist

upstream
Released (4.9~rc3)
linux-goldfish
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
xenial Not vulnerable

yakkety Not vulnerable

zesty Not vulnerable

upstream
Released (4.9~rc3)
linux-grouper
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.9~rc3)
linux-hwe
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

xenial Not vulnerable
(4.8.0-36.36~16.04.1)
yakkety Does not exist

zesty Does not exist

upstream
Released (4.9~rc3)
linux-hwe-edge
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

xenial Not vulnerable
(4.8.0-36.36~16.04.1)
yakkety Does not exist

zesty Does not exist

upstream
Released (4.9~rc3)
linux-lts-raring
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.9~rc3)
linux-lts-saucy
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.9~rc3)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
precise Not vulnerable

trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.9~rc3)
linux-lts-utopic
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.9~rc3)
linux-lts-vivid
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was not-affected)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.9~rc3)
linux-lts-wily
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.9~rc3)
linux-lts-xenial
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Not vulnerable

xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.9~rc3)
linux-maguro
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.9~rc3)
linux-mako
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
xenial Not vulnerable

yakkety Not vulnerable

zesty Does not exist

upstream
Released (4.9~rc3)
linux-manta
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist
(trusty was ignored)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

upstream
Released (4.9~rc3)
linux-raspi2
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

xenial Not vulnerable

yakkety
Released (4.8.0-1021.24)
zesty Not vulnerable
(4.8.0-1021.24)
upstream
Released (4.9~rc3)
linux-snapdragon
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

xenial Not vulnerable

yakkety Not vulnerable

zesty Not vulnerable

upstream
Released (4.9~rc3)
linux-ti-omap4
Launchpad, Ubuntu, Debian
zesty Does not exist

upstream
Released (4.9~rc3)
precise Not vulnerable

trusty Does not exist

xenial Does not exist

yakkety Does not exist

linux
Launchpad, Ubuntu, Debian
upstream
Released (4.9~rc3)
precise Not vulnerable

trusty Not vulnerable

xenial Not vulnerable

yakkety
Released (4.8.0-32.34)
zesty Not vulnerable
(4.9.0-11.12)
Patches:
Introduced by

13100a72f40f5748a04017e0ab3df4cf27c809ef

Fixed by 7df3e59c3d1df4f87fe874c7956ef7a3d2f4d5fb
linux-armadaxp
Launchpad, Ubuntu, Debian
upstream
Released (4.9~rc3)
precise Not vulnerable

trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-linaro-omap
Launchpad, Ubuntu, Debian
upstream
Released (4.9~rc3)
precise Ignored
(end of life)
trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-linaro-shared
Launchpad, Ubuntu, Debian
upstream
Released (4.9~rc3)
precise Ignored
(end of life)
trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-linaro-vexpress
Launchpad, Ubuntu, Debian
upstream
Released (4.9~rc3)
precise Ignored
(end of life)
trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-quantal
Launchpad, Ubuntu, Debian
upstream
Released (4.9~rc3)
precise Ignored
(end of life)
trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-qcm-msm
Launchpad, Ubuntu, Debian
upstream
Released (4.9~rc3)
precise Ignored
(end of life)
trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H