CVE-2017-18224

Debian Security Advisory 4188-1

Severity Score

4.7

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In the Linux kernel before 4.15, fs/ocfs2/aops.c omits use of a semaphore and consequently has a race condition for access to the extent tree during read operations in DIRECT mode, which allows local users to cause a denial of service (BUG) by modifying a certain e_cpos field.

En el kernel de Linux, en versiones anteriores a la 4.15, fs/ocfs2/aops.c omite el uso de un semáforo y, por consiguiente, tiene una condición de carrera al acceder al árbol extent durante las operaciones de lectura en modo DIRECT. Esto permite que usuarios locales provoquen una denegación de servicio (bug) modificando cierto campo e_cpos.

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

*Credits: N/A

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-03-11 CVE Reserved
2018-03-12 CVE Published
2024-08-05 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CAPEC

References (4)

URL	Tag	Source
http://www.securityfocus.com/bid/103353	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3e4c56d41eef5595035872a2ec5a483f42e8917f	2018-05-03
https://github.com/torvalds/linux/commit/3e4c56d41eef5595035872a2ec5a483f42e8917f	2018-05-03

URL	Date	SRC
https://www.debian.org/security/2018/dsa-4188	2018-05-03

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"				< 4.15 Search vendor "Linux" for product "Linux Kernel" and version " < 4.15"		-		Affected