CVE-2017-6001

kernel: Race condition between multiple sys_perf_event_open() calls

Severity Score

7.0

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Race condition in kernel/events/core.c in the Linux kernel before 4.9.7 allows local users to gain privileges via a crafted application that makes concurrent perf_event_open system calls for moving a software group into a hardware context. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-6786.

Condición de carrera en kernel/events/core.c en el kernel de Linux en versiones anteriores a 4.9.7 permite a usuarios locales obtener privilegios a través de una aplicación manipulada que hace llamadas concurrentes al sistema perf_event_open para mover un grupo de software en un contexto hardware. NOTA: esta vulnerabilidad existe debido a una solución incompleta para CVE-2016-6786.

It was found that the original fix for CVE-2016-6786 was incomplete. There exist a race between two concurrent sys_perf_event_open() calls when both try and move the same pre-existing software group into a hardware context.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-02-15 CVE Reserved
2017-02-18 CVE Published
2024-08-05 CVE Updated
2024-10-06 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 (13)

URL	Tag	Source
http://www.securityfocus.com/bid/96264	Third Party Advisory
https://source.android.com/security/bulletin/pixel/2017-11-01	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=321027c1fe77f892f4ea07846aeae08cefbbb290	2024-02-09
http://www.openwall.com/lists/oss-security/2017/02/16/1	2024-02-09
https://bugzilla.redhat.com/show_bug.cgi?id=1422825	2018-06-19
https://github.com/torvalds/linux/commit/321027c1fe77f892f4ea07846aeae08cefbbb290	2024-02-09

URL	Date	SRC
http://www.debian.org/security/2017/dsa-3791	2024-02-09
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.7	2024-02-09
https://access.redhat.com/errata/RHSA-2017:1842	2024-02-09
https://access.redhat.com/errata/RHSA-2017:2077	2024-02-09
https://access.redhat.com/errata/RHSA-2017:2669	2024-02-09
https://access.redhat.com/errata/RHSA-2018:1854	2024-02-09
https://access.redhat.com/security/cve/CVE-2017-6001	2018-06-19

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"				>= 3.18.54 < 3.18.92 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.18.54 < 3.18.92"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.0 < 4.4.65 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.0 < 4.4.65"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.5 < 4.9.7 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.5 < 4.9.7"		-		Affected