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ubuntucveUbuntu.comUB:CVE-2019-15031
HistorySep 09, 2019 - 12:00 a.m.

CVE-2019-15031

2019-09-0900:00:00
ubuntu.com
ubuntu.com
22

3.6 Low

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:N/A:P

4.4 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

0.0004 Low

EPSS

Percentile

5.1%

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.

Bugs

Notes

Author Note
sbeattie powerpc arches only
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-64.73UNKNOWN
ubuntu19.04noarchlinux< 5.0.0-29.31UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1050.52UNKNOWN
ubuntu19.04noarchlinux-aws< 5.0.0-1016.18UNKNOWN
ubuntu16.04noarchlinux-aws-hwe< 4.15.0-1050.52~16.04.1UNKNOWN
ubuntu18.04noarchlinux-azure< 5.0.0-1020.21~18.04.1UNKNOWN
ubuntu19.04noarchlinux-azure< 5.0.0-1020.21UNKNOWN
ubuntu14.04noarchlinux-azure< 4.15.0-1059.64~14.04.1UNKNOWN
ubuntu16.04noarchlinux-azure< 4.15.0-1059.64UNKNOWN
ubuntu18.04noarchlinux-azure-edge< 5.0.0-1020.21~18.04.1UNKNOWN
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3.6 Low

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:N/A:P

4.4 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

0.0004 Low

EPSS

Percentile

5.1%