CVE-2019-18660
Published: 27 November 2019
The Linux kernel before 5.4.1 on powerpc allows Information Exposure because the Spectre-RSB mitigation is not in place for all applicable CPUs, aka CID-39e72bf96f58. This is related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c.
From the Ubuntu Security Team
Anthony Steinhauser discovered that the Linux kernel did not properly perform Spectre_RSB mitigations to all processors for PowerPC architecture systems in some situations. A local attacker could use this to expose sensitive information.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-74.84)
|
| disco |
Released
(5.0.0-38.41)
|
|
| eoan |
Released
(5.3.0-26.28)
|
|
| focal |
Not vulnerable
(5.4.0-9.12)
|
|
| trusty |
Ignored
(was needs-triage ESM criteria)
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Released
(4.4.0-171.200)
|
|
|
Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
||
|
linux-hwe Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-26.28~18.04.1)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Released
(4.15.0-74.83~16.04.1)
|
|
|
linux-aws Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1057.59)
|
| disco |
Released
(5.0.0-1023.26)
|
|
| eoan |
Released
(5.3.0-1009.10)
|
|
| focal |
Not vulnerable
(5.4.0-1005.5)
|
|
| trusty |
Released
(4.4.0-1060.64)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Released
(4.4.0-1100.111)
|
|
|
linux-aws-hwe Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Released
(4.15.0-1057.59~16.04.1)
|
|
|
linux-aws-5.0 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1023.26~18.04.1)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-azure-5.3 Launchpad, Ubuntu, Debian |
eoan |
Does not exist
|
| bionic |
Released
(5.3.0-1009.10~18.04.1)
|
|
| disco |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gke-5.3 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.3.0-1011.12~18.04.1)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-oem-5.6 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| eoan |
Does not exist
|
|
| focal |
Not vulnerable
(5.4.0-1002.4)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1028.30~18.04.1)
|
| disco |
Released
(5.0.0-1028.30)
|
|
| eoan |
Released
(5.3.0-1009.10)
|
|
| focal |
Not vulnerable
(5.4.0-1006.6)
|
|
| trusty |
Released
(4.15.0-1066.71~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Released
(4.15.0-1066.71)
|
|
|
linux-azure-edge Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needs-triage)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Ignored
(end of standard support, was needs-triage)
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1028.29~18.04.1)
|
| disco |
Released
(5.0.0-1028.29)
|
|
| eoan |
Released
(5.3.0-1011.12)
|
|
| focal |
Not vulnerable
(5.4.0-1005.5)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Released
(4.15.0-1052.56)
|
|
|
linux-gcp-5.3 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.3.0-1010.11~18.04.1)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gcp-edge Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needs-triage)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gke-4.15 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1050.53)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-gke-5.0 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1027.28~18.04.1)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was needed)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Ignored
(end of life, was needs-triage)
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1052.52)
|
| disco |
Released
(5.0.0-1024.26)
|
|
| eoan |
Released
(5.3.0-1009.10)
|
|
| focal |
Not vulnerable
(5.4.0-1004.4)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Released
(4.4.0-1064.71)
|
|
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Released
(4.4.0-171.200~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1066.76)
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Released
(4.15.0-1066.76)
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Ignored
(end of standard support, was needs-triage)
|
|
|
linux-oem-osp1 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1033.38)
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Released
(5.0.0-1033.38)
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-oracle Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1031.34)
|
| disco |
Released
(5.0.0-1009.14)
|
|
| eoan |
Released
(5.3.0-1008.9)
|
|
| focal |
Not vulnerable
(5.4.0-1005.5)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Released
(4.15.0-1031.34~16.04.1)
|
|
|
linux-oracle-5.0 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1009.14~18.04.1)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-oracle-5.3 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.3.0-1011.12~18.04.1)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1053.57)
|
| disco |
Released
(5.0.0-1024.25)
|
|
| eoan |
Released
(5.3.0-1015.17)
|
|
| focal |
Ignored
(end of life, was needed)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Released
(4.4.0-1127.136)
|
|
|
linux-raspi2-5.3 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.3.0-1017.19~18.04.1)
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Does not exist
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1070.77)
|
| disco |
Ignored
(end of life, was pending)
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.5~rc1)
|
|
| xenial |
Released
(4.4.0-1131.139)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 4.7 |
| Attack vector | Local |
| Attack complexity | High |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18660
- https://www.openwall.com/lists/oss-security/2019/11/27/1
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=39e72bf96f5847ba87cc5bd7a3ce0fed813dc9ad
- https://ubuntu.com/security/notices/USN-4225-1
- https://ubuntu.com/security/notices/USN-4226-1
- https://ubuntu.com/security/notices/USN-4227-1
- https://ubuntu.com/security/notices/USN-4228-1
- https://ubuntu.com/security/notices/USN-4227-2
- https://ubuntu.com/security/notices/USN-4228-2
- https://ubuntu.com/security/notices/USN-4225-2
- NVD
- Launchpad
- Debian