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ubuntucveUbuntu.comUB:CVE-2016-3157
HistoryApr 12, 2016 - 12:00 a.m.

CVE-2016-3157

2016-04-1200:00:00
ubuntu.com
ubuntu.com
12

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

7.2 High

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.001 Low

EPSS

Percentile

28.1%

The __switch_to function in arch/x86/kernel/process_64.c in the Linux
kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which
allows local guest OS users to gain privileges, cause a denial of service
(guest OS crash), or obtain sensitive information by leveraging I/O port
access.

Bugs

Notes

Author Note
jdstrand android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.10 and earlier preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support
OSVersionArchitecturePackageVersionFilename
ubuntu12.04noarchlinux< 3.2.0-104.145UNKNOWN
ubuntu14.04noarchlinux< 3.13.0-86.130UNKNOWN
ubuntu15.10noarchlinux< 4.2.0-36.41UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-22.39UNKNOWN
ubuntu12.04noarchlinux-armadaxp< 3.2.0-1667.92UNKNOWN
ubuntu12.04noarchlinux-lts-trusty< 3.13.0-86.130~precise1UNKNOWN
ubuntu14.04noarchlinux-lts-utopic< 3.16.0-71.91~14.04.1UNKNOWN
ubuntu14.04noarchlinux-lts-vivid< 3.19.0-59.65~14.04.1UNKNOWN
ubuntu14.04noarchlinux-lts-wily< 4.2.0-36.41~14.04.1UNKNOWN
ubuntu14.04noarchlinux-lts-xenial< 4.4.0-22.39~14.04.1UNKNOWN
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7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

7.2 High

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.001 Low

EPSS

Percentile

28.1%