CVE-2015-8746

kernel: when NFSv4 migration is executed, kernel oops occurs at NFS client

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

fs/nfs/nfs4proc.c in the NFS client in the Linux kernel before 4.2.2 does not properly initialize memory for migration recovery operations, which allows remote NFS servers to cause a denial of service (NULL pointer dereference and panic) via crafted network traffic.

fs/nfs/nfs4proc.c en el cliente NFS en el kernel de Linux en versiones anteriores a 4.2.2 no inicializa memoria correctamente para operaciones de recuperación de migración, lo que permite a servidores NFS remotos provocar una denegación de servicio (referencia a puntero NULL y pánico) a través de tráfico de red manipulado.

A NULL pointer dereference flaw was found in the Linux kernel: the NFSv4.2 migration code improperly initialized the kernel structure. A local, authenticated user could use this flaw to cause a panic of the NFS client (denial of service).

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

Attack Vector

Local

Attack Complexity

High

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-01-06 CVE Reserved
2016-05-02 CVE Published
2023-04-05 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-665: Improper Initialization

CAPEC

References (9)

URL	Tag	Source
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=18e3b739fdc826481c6a1335ce0c5b19b3d415da	X_refsource_confirm
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.2.2	X_refsource_confirm
http://www.openwall.com/lists/oss-security/2016/01/05/9	Mailing List
http://www.securitytracker.com/id/1034594	Vdb Entry

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://rhn.redhat.com/errata/RHSA-2016-2574.html	2018-01-05
http://rhn.redhat.com/errata/RHSA-2016-2584.html	2018-01-05
https://bugzilla.redhat.com/show_bug.cgi?id=1295802	2016-11-03
https://github.com/torvalds/linux/commit/18e3b739fdc826481c6a1335ce0c5b19b3d415da	2018-01-05
https://access.redhat.com/security/cve/CVE-2015-8746	2016-11-03

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"				<= 4.2.1 Search vendor "Linux" for product "Linux Kernel" and version " <= 4.2.1"		-		Affected