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ubuntuUbuntuUSN-3522-3
HistoryJan 10, 2018 - 12:00 a.m.

Linux kernel regression

2018-01-1000:00:00
ubuntu.com
41

5.6 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

6.2 Medium

AI Score

Confidence

High

4.7 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

NONE

Availability Impact

NONE

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

0.974 High

EPSS

Percentile

99.9%

JSON

Releases

  • Ubuntu 16.04 ESM

Packages

  • linux - Linux kernel

Details

USN-3522-1 fixed a vulnerability in the Linux kernel to address
Meltdown (CVE-2017-5754). Unfortunately, that update introduced
a regression where a few systems failed to boot successfully. This
update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Jann Horn discovered that microprocessors utilizing speculative execution
and indirect branch prediction may allow unauthorized memory reads via
sidechannel attacks. This flaw is known as Meltdown. A local attacker could
use this to expose sensitive information, including kernel memory.

OSVersionArchitecturePackageVersionFilename
Ubuntu16.04noarchlinux-image-4.4.0-109-generic< 4.4.0-109.132UNKNOWN
Ubuntu16.04noarchblock-modules-4.4.0-109-generic-di< 4.4.0-109.132UNKNOWN
Ubuntu16.04noarchcrypto-modules-4.4.0-109-generic-di< 4.4.0-109.132UNKNOWN
Ubuntu16.04noarchfat-modules-4.4.0-109-generic-di< 4.4.0-109.132UNKNOWN
Ubuntu16.04noarchfb-modules-4.4.0-109-generic-di< 4.4.0-109.132UNKNOWN
Ubuntu16.04noarchfirewire-core-modules-4.4.0-109-generic-di< 4.4.0-109.132UNKNOWN
Ubuntu16.04noarchfloppy-modules-4.4.0-109-generic-di< 4.4.0-109.132UNKNOWN
Ubuntu16.04noarchfs-core-modules-4.4.0-109-generic-di< 4.4.0-109.132UNKNOWN
Ubuntu16.04noarchfs-secondary-modules-4.4.0-109-generic-di< 4.4.0-109.132UNKNOWN
Ubuntu16.04noarchinput-modules-4.4.0-109-generic-di< 4.4.0-109.132UNKNOWN
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5.6 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

6.2 Medium

AI Score

Confidence

High

4.7 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

NONE

Availability Impact

NONE

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

0.974 High

EPSS

Percentile

99.9%

JSON
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