CVE-2019-15902
Published: 4 September 2019
A backporting error was discovered in the Linux stable/longterm kernel 4.4.x through 4.4.190, 4.9.x through 4.9.190, 4.14.x through 4.14.141, 4.19.x through 4.19.69, and 5.2.x through 5.2.11. Misuse of the upstream "x86/ptrace: Fix possible spectre-v1 in ptrace_get_debugreg()" commit reintroduced the Spectre vulnerability that it aimed to eliminate. This occurred because the backport process depends on cherry picking specific commits, and because two (correctly ordered) code lines were swapped.
From the Ubuntu Security Team
Brad Spengler discovered that a Spectre mitigation was improperly implemented in the ptrace susbsystem of the Linux kernel. A local attacker could possibly use this to expose sensitive information.
Priority
Status
Package | Release | Status |
---|---|---|
linux
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-66.75)
|
disco |
Released
(5.0.0-32.34)
|
|
eoan |
Not vulnerable
(5.0.0-13.14)
|
|
focal |
Not vulnerable
(5.4.0-9.12)
|
|
trusty |
Ignored
(was needs-triage ESM criteria)
|
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Released
(4.4.0-166.195)
|
|
Patches:
Introduced by Fixed by local-2019-15902-fix |
||
linux-aws
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1052.54)
|
disco |
Released
(5.0.0-1019.21)
|
|
eoan |
Not vulnerable
(5.0.0-1004.4)
|
|
focal |
Not vulnerable
(5.4.0-1005.5)
|
|
trusty |
Released
(4.4.0-1056.60)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Released
(4.4.0-1096.107)
|
|
linux-aws-5.0
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.0.0-1021.24~18.04.1)
|
disco |
Does not exist
|
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Does not exist
|
|
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
(2.6.12~rc2)
|
|
xenial |
Released
(4.15.0-1052.54~16.04.1)
|
|
linux-azure
Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1023.24~18.04.1)
|
disco |
Released
(5.0.0-1023.24)
|
|
eoan |
Not vulnerable
(5.0.0-1004.4)
|
|
focal |
Not vulnerable
(5.4.0-1006.6)
|
|
trusty |
Released
(4.15.0-1061.66~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Released
(4.15.0-1061.66)
|
|
linux-azure-5.3
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.3.0-1007.8~18.04.1)
|
disco |
Does not exist
|
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Does not exist
|
|
linux-azure-edge
Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1023.24~18.04.1)
|
disco |
Does not exist
|
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Released
(4.15.0-1061.66)
|
|
linux-gcp
Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1021.21~18.04.1)
|
disco |
Released
(5.0.0-1021.21)
|
|
eoan |
Not vulnerable
(5.0.0-1004.4)
|
|
focal |
Not vulnerable
(5.4.0-1005.5)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Released
(4.15.0-1047.50)
|
|
linux-gcp-5.3
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.3.0-1008.9~18.04.1)
|
disco |
Does not exist
|
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Does not exist
|
|
linux-gcp-edge
Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1021.21~18.04.1)
|
disco |
Does not exist
|
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Does not exist
|
|
linux-gke-4.15
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1046.49)
|
disco |
Does not exist
|
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Does not exist
|
|
linux-gke-5.0
Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1023.23~18.04.2)
|
disco |
Does not exist
|
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
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
(2.6.12~rc2)
|
|
xenial |
Does not exist
|
|
linux-hwe
Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-32.34~18.04.2)
|
disco |
Does not exist
|
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Released
(4.15.0-66.75~16.04.1)
|
|
linux-hwe-edge
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.0.0-15.16~18.04.1)
|
disco |
Does not exist
|
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Released
(4.15.0-66.75~16.04.1)
|
|
linux-kvm
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1048.48)
|
disco |
Released
(5.0.0-1020.21)
|
|
eoan |
Not vulnerable
(5.0.0-1004.4)
|
|
focal |
Not vulnerable
(5.4.0-1004.4)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Released
(4.4.0-1060.67)
|
|
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
(2.6.12~rc2)
|
|
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
(4.4.0-166.195~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Does not exist
|
|
linux-oem
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1059.68)
|
disco |
Ignored
(end of life)
|
|
eoan |
Released
(4.15.0-1059.68)
|
|
focal |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Ignored
(end of standard support, was needs-triage)
|
|
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
(2.6.12~rc2)
|
|
xenial |
Does not exist
|
|
linux-oem-osp1
Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1025.28)
|
disco |
Ignored
(end of life, was pending)
|
|
eoan |
Not vulnerable
(5.0.0-1010.11)
|
|
focal |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Does not exist
|
|
linux-oracle
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1027.30)
|
disco |
Ignored
(end of life, was pending)
|
|
eoan |
Not vulnerable
(4.15.0-1011.13)
|
|
focal |
Not vulnerable
(5.4.0-1005.5)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Released
(4.15.0-1027.30~16.04.1)
|
|
linux-oracle-5.0
Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.0.0-1007.12~18.04.1)
|
disco |
Does not exist
|
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
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
(2.6.12~rc2)
|
|
xenial |
Does not exist
|
|
linux-raspi2
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1049.53)
|
disco |
Released
(5.0.0-1020.20)
|
|
eoan |
Not vulnerable
(5.0.0-1006.6)
|
|
focal |
Not vulnerable
(5.4.0-1004.4)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Released
(4.4.0-1124.133)
|
|
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
(2.6.12~rc2)
|
|
xenial |
Does not exist
|
|
linux-snapdragon
Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1066.73)
|
disco |
Released
(5.0.0-1024.25)
|
|
eoan |
Does not exist
|
|
focal |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.6.12~rc2)
|
|
xenial |
Released
(4.4.0-1128.136)
|
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:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N |
References
- https://grsecurity.net/teardown_of_a_failed_linux_lts_spectre_fix.php
- https://ubuntu.com/security/notices/USN-4157-1
- https://ubuntu.com/security/notices/USN-4162-1
- https://ubuntu.com/security/notices/USN-4163-1
- https://ubuntu.com/security/notices/USN-4157-2
- https://ubuntu.com/security/notices/USN-4162-2
- https://ubuntu.com/security/notices/USN-4163-2
- https://www.cve.org/CVERecord?id=CVE-2019-15902
- NVD
- Launchpad
- Debian