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archlinuxArchLinuxASA-201612-7
HistoryDec 06, 2016 - 12:00 a.m.

[ASA-201612-7] linux-lts: privilege escalation

2016-12-0600:00:00
security.archlinux.org
529

7.2 High

CVSS2

Attack Vector

LOCAL

Attack 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

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

0.0004 Low

EPSS

Percentile

9.5%

Arch Linux Security Advisory ASA-201612-7

Severity: High
Date : 2016-12-06
CVE-ID : CVE-2016-8655
Package : linux-lts
Type : privilege escalation
Remote : No
Link : https://wiki.archlinux.org/index.php/CVE

Summary

The package linux-lts before version 4.4.36-1 is vulnerable to
privilege escalation.

Resolution

Upgrade to 4.4.36-1.

pacman -Syu “linux-lts>=4.4.36-1”

The problem has been fixed upstream but no release is available yet.

Workaround

None.

Description

Philip Pettersson discovered a race condition in the af_packet
implementation in the Linux kernel. A local unprivileged attacker could
use this to cause a denial of service (system crash) or run arbitrary
code with administrative privileges.

Impact

A local unprivileged attacker is able to crash the system or run
arbitrary code with administrative privileges.

References

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=84ac7260236a49c79eede91617700174c2c19b0c
http://seclists.org/oss-sec/2016/q4/607
https://access.redhat.com/security/cve/CVE-2016-8655

OSVersionArchitecturePackageVersionFilename
ArchLinuxanyanylinux-lts< 4.4.36-1UNKNOWN

7.2 High

CVSS2

Attack Vector

LOCAL

Attack 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

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

0.0004 Low

EPSS

Percentile

9.5%