CVE-2018-14678
Published: 28 July 2018
An issue was discovered in the Linux kernel through 4.17.11, as used in Xen through 4.11.x. The xen_failsafe_callback entry point in arch/x86/entry/entry_64.S does not properly maintain RBX, which allows local users to cause a denial of service (uninitialized memory usage and system crash). Within Xen, 64-bit x86 PV Linux guest OS users can trigger a guest OS crash or possibly gain privileges.
From the Ubuntu Security Team
M. Vefa Bicakci and Andy Lutomirski discovered that the kernel did not properly set up all arguments to an error handler callback used when running as a paravirtualized guest. An unprivileged attacker in a paravirtualized guest VM could use this to cause a denial of service (guest VM crash).
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-47.50)
|
| cosmic |
Not vulnerable
(4.17.0-9.10)
|
|
| disco |
Not vulnerable
(4.18.0-10.11)
|
|
| precise |
Not vulnerable
(3.0.0-12.20)
|
|
| trusty |
Not vulnerable
(3.11.0-12.19)
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Not vulnerable
(4.2.0-16.19)
|
|
|
Patches: Introduced by 3ac6d8c787b835b997eb23e43e09aa0895ef7d58 |
||
|
linux-aws Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1035.37)
|
| cosmic |
Not vulnerable
(4.18.0-1002.3)
|
|
| disco |
Not vulnerable
(4.18.0-1002.3)
|
|
| precise |
Does not exist
|
|
| trusty |
Not vulnerable
(4.4.0-1002.2)
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Not vulnerable
(4.4.0-1001.10)
|
|
|
linux-aws-hwe Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Released
(4.15.0-1035.37~16.04.1)
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
bionic |
Released
(4.18.0-1011.11~18.04.1)
|
| cosmic |
Not vulnerable
(4.18.0-1003.3)
|
|
| disco |
Not vulnerable
(4.18.0-1003.3)
|
|
| precise |
Does not exist
|
|
| trusty |
Released
(4.15.0-1041.45~14.04.1)
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Released
(4.15.0-1041.45)
|
|
|
linux-azure-edge Launchpad, Ubuntu, Debian |
bionic |
Released
(4.18.0-1011.11~18.04.1)
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Released
(4.15.0-1041.45)
|
|
|
linux-euclid Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Not vulnerable
(4.4.0-9019.20)
|
|
|
linux-flo Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Ignored
(abandoned)
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1029.31)
|
| cosmic |
Not vulnerable
(4.18.0-1002.3)
|
|
| disco |
Not vulnerable
(4.18.0-1002.3)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Released
(4.15.0-1029.31~16.04.1)
|
|
|
linux-gcp-edge Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.18.0-1004.5~18.04.1)
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-gke Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Ignored
(end-of-life)
|
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Ignored
(end-of-life)
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.18.0-13.14~18.04.1)
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Released
(4.15.0-47.50~16.04.1)
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.0.0-15.16~18.04.1)
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Released
(4.15.0-47.50~16.04.1)
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1031.31)
|
| cosmic |
Not vulnerable
(4.18.0-1002.2)
|
|
| disco |
Not vulnerable
(4.18.0-1003.3)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Not vulnerable
(4.4.0-1004.9)
|
|
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Not vulnerable
(3.13.0-24.46~precise1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end-of-life])
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end-of-life])
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end-of-life])
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Not vulnerable
(4.4.0-13.29~14.04.1)
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-maguro Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-mako Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Ignored
(abandoned)
|
|
|
linux-manta Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1035.40)
|
| cosmic |
Released
(4.15.0-1035.40)
|
|
| disco |
Not vulnerable
(4.15.0-1035.40)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Not vulnerable
|
|
|
linux-oracle Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1010.12)
|
| cosmic |
Released
(4.15.0-1010.12)
|
|
| disco |
Not vulnerable
(4.15.0-1010.12)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Released
(4.15.0-1010.12~16.04.1)
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1033.35)
|
| cosmic |
Not vulnerable
(4.18.0-1004.6)
|
|
| disco |
Not vulnerable
(4.18.0-1005.7)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Not vulnerable
(4.2.0-1013.19)
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.4.0-1077.82)
|
| cosmic |
Does not exist
|
|
| disco |
Not vulnerable
(5.0.0-1010.10)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.18~rc8)
|
|
| xenial |
Not vulnerable
(4.4.0-1012.12)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |