CVE-2018-3620
Published: 14 August 2018
Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access via a terminal page fault and a side-channel analysis.
From the Ubuntu Security Team
It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a malicious process that is executing on the CPU core. This vulnerability is also known as L1 Terminal Fault (L1TF). A local attacker could use this to expose sensitive information (memory from the kernel or other processes).
Notes
| Author | Note |
|---|---|
| tyhicks |
The break-fix lines for this CVE are not complete since a large number of patches are required to mitigate this issue. The commit(s) listed are chosen as placeholders for automated CVE triage purposes. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-32.35)
|
| cosmic |
Not vulnerable
(4.17.0-9.10)
|
|
| trusty |
Released
(3.13.0-155.205)
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Released
(4.4.0-133.159)
|
|
|
Patches:
Introduced by
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Introduced by
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
|
||
|
linux-aws
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1019.19)
|
| cosmic |
Not vulnerable
(4.15.0-1020.20)
|
|
| trusty |
Released
(4.4.0-1027.30)
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Released
(4.4.0-1065.75)
|
|
|
linux-aws-hwe
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Not vulnerable
(4.15.0-1030.31~16.04.1)
|
|
|
linux-azure
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1021.21)
|
| cosmic |
Not vulnerable
(4.15.0-1023.24)
|
|
| trusty |
Not vulnerable
(4.15.0-1023.24~14.04.1)
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Released
(4.15.0-1021.21~16.04.1)
|
|
|
linux-azure-edge
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1021.21)
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Released
(4.15.0-1021.21~16.04.1)
|
|
|
linux-euclid
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Ignored
(supported use cases do not include executing untrusted code)
|
|
|
linux-flo
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Not vulnerable
(ARM is not affected)
|
|
| xenial |
Ignored
(abandoned)
|
|
|
linux-gcp
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1017.18)
|
| cosmic |
Not vulnerable
(4.15.0-1018.19)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Released
(4.15.0-1017.18~16.04.1)
|
|
|
linux-gcp-edge
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.18.0-1004.5~18.04.1)
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gke
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Ignored
(end of standard support, was needs-triage)
|
|
|
linux-goldfish
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Ignored
(end of life, was needed)
|
|
|
linux-grouper
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Not vulnerable
(ARM is not affected)
|
|
| xenial |
Does not exist
|
|
|
linux-hwe
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.18.0-13.14~18.04.1)
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Released
(4.15.0-32.35~16.04.1)
|
|
|
linux-hwe-edge
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.18.0-12.13~18.04.1)
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Released
(4.15.0-32.35~16.04.1)
|
|
|
linux-kvm
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1019.19)
|
| cosmic |
Not vulnerable
(4.15.0-1020.20)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Released
(4.4.0-1031.37)
|
|
|
linux-lts-trusty
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-utopic
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-vivid
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-wily
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-xenial
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Released
(4.4.0-133.159~14.04.1)
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-maguro
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Not vulnerable
(ARM is not affected)
|
|
| xenial |
Does not exist
|
|
|
linux-mako
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Not vulnerable
(ARM is not affected)
|
|
| xenial |
Ignored
(abandoned)
|
|
|
linux-manta
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Not vulnerable
(ARM is not affected)
|
|
| xenial |
Does not exist
|
|
|
linux-oem
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1015.18)
|
| cosmic |
Not vulnerable
(4.15.0-1017.20)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Ignored
(end of standard support, was needed)
|
|
|
linux-oracle
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1007.9)
|
| cosmic |
Not vulnerable
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.19~rc1)
|
|
| xenial |
Not vulnerable
(4.15.0-1007.9~16.04.1)
|
|
|
linux-raspi2
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(ARM is not affected)
|
| cosmic |
Not vulnerable
(ARM is not affected)
|
|
| trusty |
Does not exist
|
|
| upstream |
Not vulnerable
(ARM is not affected)
|
|
| xenial |
Not vulnerable
(ARM is not affected)
|
|
|
linux-snapdragon
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Not vulnerable
(ARM is not affected)
|
|
| xenial |
Not vulnerable
(ARM is not affected)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.6 |
| Attack vector | Local |
| Attack complexity | High |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N |
References
- https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/L1TF
- https://ubuntu.com/security/notices/USN-3740-1
- https://ubuntu.com/security/notices/USN-3740-2
- https://ubuntu.com/security/notices/USN-3741-1
- https://ubuntu.com/security/notices/USN-3741-2
- https://ubuntu.com/security/notices/USN-3742-1
- https://ubuntu.com/security/notices/USN-3742-2
- https://ubuntu.com/security/notices/USN-3823-1
- https://www.cve.org/CVERecord?id=CVE-2018-3620
- NVD
- Launchpad
- Debian