CVE-2018-5995

Ubuntu Security Notice USN-5343-1

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The pcpu_embed_first_chunk function in mm/percpu.c in the Linux kernel through 4.14.14 allows local users to obtain sensitive address information by reading dmesg data from a "pages/cpu" printk call.

La función pcpu_embed_first_chunk en mm/percpu.c en el kernel de Linux hasta la versión 4.14.14 permite que usuarios locales obtengan información sensible de direcciones leyendo datos dmesg desde una llamada printk "pages/cpu".

Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the Linux kernel did not properly restrict access to the cgroups v1 release_agent feature. A local attacker could use this to gain administrative privileges. It was discovered that the aufs file system in the Linux kernel did not properly restrict mount namespaces, when mounted with the non-default allow_userns option set. A local attacker could use this to gain administrative privileges.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-01-22 CVE Reserved
2018-08-07 CVE Published
2024-08-05 CVE Updated
2025-07-08 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (7)

URL	Tag	Source
http://www.securityfocus.com/bid/105049	Third Party Advisory
https://github.com/johnsonwangqize/cve-linux/blob/master/CVE-2018-5995.md	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html	Mailing List
https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html	Mailing List
https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html	Mailing List
https://seclists.org/bugtraq/2019/Aug/18	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.debian.org/security/2019/dsa-4497	2019-05-28

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				<= 4.14.14 Search vendor "Linux" for product "Linux Kernel" and version " <= 4.14.14"		-		Affected