CVE-2017-18203

kernel: Race condition in drivers/md/dm.c:dm_get_from_kobject() allows local users to cause a denial of service

Severity Score

4.7

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The dm_get_from_kobject function in drivers/md/dm.c in the Linux kernel before 4.14.3 allow local users to cause a denial of service (BUG) by leveraging a race condition with __dm_destroy during creation and removal of DM devices.

La función dm_get_from_kobject en drivers/md/dm.c en el kernel de Linux, en versiones anteriores a la 4.14.3, permite que usuarios locales provoquen una denegación de servicio (bug) aprovechando una condición de carrera en __dm_destroy durante la creación y eliminación de dispositivos DM.

The Linux kernel, before version 4.14.3, is vulnerable to a denial of service in drivers/md/dm.c:dm_get_from_kobject() which can be caused by local users leveraging a race condition with __dm_destroy() during creation and removal of DM devices. Only privileged local users (with CAP_SYS_ADMIN capability) can directly perform the ioctl operations for dm device creation and removal and this would typically be outside the direct control of the unprivileged attacker.

*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

2018-02-27 CVE Reserved
2018-02-27 CVE Published
2023-03-08 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-400: Uncontrolled Resource Consumption

CAPEC

References (19)

URL	Tag	Source
http://www.securityfocus.com/bid/103184	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html	Mailing List

URL	Date	SRC

URL	Date	SRC
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b9a41d21dceadf8104812626ef85dc56ee8a60ed	2018-06-20
https://github.com/torvalds/linux/commit/b9a41d21dceadf8104812626ef85dc56ee8a60ed	2018-06-20

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2018:0676	2018-06-20
https://access.redhat.com/errata/RHSA-2018:1062	2018-06-20
https://access.redhat.com/errata/RHSA-2018:1854	2018-06-20
https://access.redhat.com/errata/RHSA-2019:4154	2018-06-20
https://usn.ubuntu.com/3619-1	2018-06-20
https://usn.ubuntu.com/3619-2	2018-06-20
https://usn.ubuntu.com/3653-1	2018-06-20
https://usn.ubuntu.com/3653-2	2018-06-20
https://usn.ubuntu.com/3655-1	2018-06-20
https://usn.ubuntu.com/3655-2	2018-06-20
https://usn.ubuntu.com/3657-1	2018-06-20
https://www.debian.org/security/2018/dsa-4187	2018-06-20
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.3	2018-06-20
https://access.redhat.com/security/cve/CVE-2017-18203	2019-12-10
https://bugzilla.redhat.com/show_bug.cgi?id=1550811	2019-12-10

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"				< 4.14.3 Search vendor "Linux" for product "Linux Kernel" and version " < 4.14.3"		-		Affected