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).
Notes
Author | Note |
---|---|
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
Status
Package | Release | Status |
---|---|---|
linux-armadaxp Launchpad, Ubuntu, Debian |
xenial |
Does not exist
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
upstream |
Released
(4.7~rc4)
|
|
precise |
Released
(3.2.0-1670.96)
|
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-aws Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Not vulnerable
(4.4.0-1002.2)
|
|
xenial |
Not vulnerable
(4.4.0-1001.10)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
upstream |
Released
(4.7~rc4)
|
|
linux-flo Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
wily |
Ignored
(end of life)
|
|
xenial |
Ignored
(abandoned)
|
|
yakkety |
Ignored
(end of life)
|
|
zesty |
Does not exist
|
|
upstream |
Released
(4.7~rc4)
|
|
linux-gke Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
|
|
xenial |
Not vulnerable
(4.4.0-1003.3)
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
upstream |
Released
(4.7~rc4)
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
wily |
Ignored
(end of life)
|
|
xenial |
Ignored
(abandoned)
|
|
yakkety |
Ignored
(end of life)
|
|
zesty |
Ignored
(end of life)
|
|
upstream |
Released
(4.7~rc4)
|
|
linux-grouper Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
upstream |
Released
(4.7~rc4)
|
|
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
(4.7~rc4)
|
|
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
(4.7~rc4)
|
|
linux-lts-quantal Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
upstream |
Released
(4.7~rc4)
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-lts-raring Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
upstream |
Released
(4.7~rc4)
|
|
linux-lts-saucy Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
upstream |
Released
(4.7~rc4)
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-lts-trusty Launchpad, Ubuntu, Debian |
precise |
Released
(3.13.0-93.140~precise1)
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
upstream |
Released
(4.7~rc4)
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
upstream |
Released
(4.7~rc4)
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Released
(3.19.0-66.74~14.04.1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
upstream |
Released
(4.7~rc4)
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
upstream |
Released
(4.7~rc4)
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Released
(4.4.0-34.53~14.04.1)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
upstream |
Released
(4.7~rc4)
|
|
linux-maguro Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
upstream |
Released
(4.7~rc4)
|
|
linux-mako Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
wily |
Ignored
(end of life)
|
|
xenial |
Ignored
(abandoned)
|
|
yakkety |
Ignored
(end of life)
|
|
zesty |
Does not exist
|
|
upstream |
Released
(4.7~rc4)
|
|
linux-manta Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
(trusty was ignored)
|
|
wily |
Ignored
(end of life)
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
upstream |
Released
(4.7~rc4)
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
|
|
wily |
Ignored
(end of life)
|
|
xenial |
Released
(4.4.0-1019.25)
|
|
yakkety |
Not vulnerable
(4.8.0-1012.14)
|
|
zesty |
Not vulnerable
(4.8.0-1013.15)
|
|
upstream |
Released
(4.7~rc4)
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Released
(4.4.0-1022.25)
|
|
yakkety |
Not vulnerable
(4.4.0-1022.25)
|
|
zesty |
Not vulnerable
(4.4.0-1029.32)
|
|
upstream |
Released
(4.7~rc4)
|
|
linux Launchpad, Ubuntu, Debian |
upstream |
Released
(4.7~rc4)
|
precise |
Released
(3.2.0-107.148)
|
|
trusty |
Released
(3.13.0-93.140)
|
|
wily |
Ignored
(end of life)
|
|
xenial |
Released
(4.4.0-34.53)
|
|
yakkety |
Not vulnerable
(4.4.0-33.52)
|
|
zesty |
Not vulnerable
(4.8.0-22.24)
|
|
Patches: Introduced by f70e2e06196ad4c1c762037da2f75354f6c16b81 |
||
linux-ti-omap4 Launchpad, Ubuntu, Debian |
upstream |
Released
(4.7~rc4)
|
precise |
Released
(3.2.0-1485.112)
|
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-linaro-omap Launchpad, Ubuntu, Debian |
upstream |
Released
(4.7~rc4)
|
precise |
Ignored
(end of life)
|
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-linaro-shared Launchpad, Ubuntu, Debian |
upstream |
Released
(4.7~rc4)
|
precise |
Ignored
(end of life)
|
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-linaro-vexpress Launchpad, Ubuntu, Debian |
upstream |
Released
(4.7~rc4)
|
precise |
Ignored
(end of life)
|
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-qcm-msm Launchpad, Ubuntu, Debian |
upstream |
Released
(4.7~rc4)
|
precise |
Ignored
(end of life)
|
|
trusty |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.5 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4470
- https://www.spinics.net/lists/linux-kernel-janitors/msg26069.html
- https://ubuntu.com/security/notices/USN-3049-1
- https://ubuntu.com/security/notices/USN-3050-1
- https://ubuntu.com/security/notices/USN-3051-1
- https://ubuntu.com/security/notices/USN-3052-1
- https://ubuntu.com/security/notices/USN-3053-1
- https://ubuntu.com/security/notices/USN-3054-1
- https://ubuntu.com/security/notices/USN-3055-1
- https://ubuntu.com/security/notices/USN-3056-1
- https://ubuntu.com/security/notices/USN-3057-1
- NVD
- Launchpad
- Debian