CVE-2019-15031
Published: 9 September 2019
In the Linux kernel through 5.2.14 on the powerpc platform, a local user can read vector registers of other users' processes via an interrupt. To exploit the venerability, a local user starts a transaction (via the hardware transactional memory instruction tbegin) and then accesses vector registers. At some point, the vector registers will be corrupted with the values from a different local Linux process, because MSR_TM_ACTIVE is misused in arch/powerpc/kernel/process.c.
From the Ubuntu Security Team
It was discovered that the Linux kernel on PowerPC architectures did not properly handle exceptions on interrupts in some situations. A local attacker could use this to expose sensitive information.
Notes
| Author | Note |
|---|---|
| sbeattie | powerpc arches only |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-64.73)
|
| disco |
Released
(5.0.0-29.31)
|
|
| eoan |
Not vulnerable
(5.3.0-10.11)
|
|
| trusty |
Not vulnerable
(3.11.0-12.19)
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Not vulnerable
(4.2.0-16.19)
|
|
|
Patches: Introduced by a7771176b4392fbc3a17399c51a8c11f2f681afe |
||
|
linux-aws Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1050.52)
|
| disco |
Released
(5.0.0-1016.18)
|
|
| eoan |
Not vulnerable
(5.3.0-1003.3)
|
|
| trusty |
Not vulnerable
(4.4.0-1002.2)
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Not vulnerable
(4.4.0-1001.10)
|
|
|
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
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-aws-hwe Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Released
(4.15.0-1050.52~16.04.1)
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1020.21~18.04.1)
|
| disco |
Released
(5.0.0-1020.21)
|
|
| eoan |
Not vulnerable
(5.3.0-1002.2)
|
|
| trusty |
Released
(4.15.0-1059.64~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Released
(4.15.0-1059.64)
|
|
|
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
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-azure-edge Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1020.21~18.04.1)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Released
(4.15.0-1059.64)
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1044.70)
|
| disco |
Released
(5.0.0-1017.17)
|
|
| eoan |
Not vulnerable
(5.3.0-1003.3)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Released
(4.15.0-1044.46)
|
|
|
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
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-gcp-edge Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1044.70)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-gke-4.15 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1044.46)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-gke-5.0 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1017.17~18.04.1)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-29.31~18.04.1)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Released
(4.15.0-64.73~16.04.1)
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
bionic |
Ignored
(end of life, was pending)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Released
(4.15.0-64.73~16.04.1)
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1046.46)
|
| disco |
Released
(5.0.0-1017.18)
|
|
| eoan |
Not vulnerable
(5.3.0-1003.3)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Not vulnerable
(4.4.0-1004.9)
|
|
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| trusty |
Not vulnerable
(4.4.0-13.29~14.04.1)
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1056.65)
|
| disco |
Ignored
(end of life, was pending)
|
|
| eoan |
Released
(4.15.0-1059.68)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Ignored
(end of standard support, was needs-triage)
|
|
|
linux-oem-5.4 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-oem-osp1 Launchpad, Ubuntu, Debian |
bionic |
Released
(5.0.0-1022.24)
|
| disco |
Ignored
(end of life, was pending)
|
|
| eoan |
Released
(5.0.0-1022.24)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-oracle Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1025.28)
|
| disco |
Released
(5.0.0-1004.8)
|
|
| eoan |
Not vulnerable
(5.3.0-1002.2)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Released
(4.15.0-1025.28~16.04.1)
|
|
|
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
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1047.51)
|
| disco |
Released
(5.0.0-1017.17)
|
|
| eoan |
Not vulnerable
(5.0.0-1017.17)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Not vulnerable
(4.2.0-1013.19)
|
|
|
linux-raspi2-5.3 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.3.0-1017.19~18.04.1)
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Does not exist
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1064.71)
|
| disco |
Released
(5.0.0-1021.22)
|
|
| eoan |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.3~rc8)
|
|
| xenial |
Not vulnerable
(4.4.0-1012.12)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 4.4 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity impact | None |
| Availability impact | Low |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L |