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ubuntuUbuntuUSN-2646-2
HistoryJun 21, 2015 - 12:00 a.m.

Linux kernel regression

2015-06-2100:00:00
ubuntu.com
33

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

5.8 Medium

AI Score

Confidence

Low

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

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

25.3%

JSON

Releases

  • Ubuntu 14.10

Packages

  • linux - Linux kernel

Details

The Fix for CVE-2015-1328 introduced a regression into the Linux kernel’s
overlayfs file system. The removal of a directory that only exists on the
lower layer results in a kernel panic.

We apologize for the inconvenience.

Original advisory details:

Philip Pettersson discovered a privilege escalation when using overlayfs
mounts inside of user namespaces. A local user could exploit this flaw to
gain administrative privileges on the system.

OSVersionArchitecturePackageVersionFilename
Ubuntu14.10noarchlinux-image-3.16.0-41-powerpc-smp< 3.16.0-41.57UNKNOWN
Ubuntu14.10noarchblock-modules-3.16.0-41-generic-di< 3.16.0-41.57UNKNOWN
Ubuntu14.10noarchcrypto-modules-3.16.0-41-generic-di< 3.16.0-41.57UNKNOWN
Ubuntu14.10noarchfat-modules-3.16.0-41-generic-di< 3.16.0-41.57UNKNOWN
Ubuntu14.10noarchfb-modules-3.16.0-41-generic-di< 3.16.0-41.57UNKNOWN
Ubuntu14.10noarchfirewire-core-modules-3.16.0-41-generic-di< 3.16.0-41.57UNKNOWN
Ubuntu14.10noarchfloppy-modules-3.16.0-41-generic-di< 3.16.0-41.57UNKNOWN
Ubuntu14.10noarchfs-core-modules-3.16.0-41-generic-di< 3.16.0-41.57UNKNOWN
Ubuntu14.10noarchfs-secondary-modules-3.16.0-41-generic-di< 3.16.0-41.57UNKNOWN
Ubuntu14.10noarchinput-modules-3.16.0-41-generic-di< 3.16.0-41.57UNKNOWN
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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

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5.8 Medium

AI Score

Confidence

Low

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

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

25.3%

JSON
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