CVE-2012-2119

kernel: macvtap: zerocopy: vector length is not validated before pinning user pages

Severity Score

6.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Buffer overflow in the macvtap device driver in the Linux kernel before 3.4.5, when running in certain configurations, allows privileged KVM guest users to cause a denial of service (crash) via a long descriptor with a long vector length.

Desbordamiento de búfer en el controlador de dispositivo macvtap en el kernel de Linux anteriores a v3.4.5, cuando se ejecuta en ciertas configuraciones, permite a los usuarios invitados KVM privilegiados causar una denegación de servicio (caída) a través de un descriptor largo con una longitud de vector de larga.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Adjacent

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2012-04-04 CVE Reserved
2012-06-18 CVE Published
2024-08-06 CVE Updated
2024-08-22 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (12)

URL	Tag	Source
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=814278	X_refsource_confirm
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b92946e2919134ebe2a4083e4302236295ea2a73	X_refsource_confirm
http://marc.info/?l=linux-netdev&m=133455718001608&w=2	Mailing List
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5	X_refsource_confirm
http://www.openwall.com/lists/oss-security/2012/04/19/14	Mailing List
https://github.com/torvalds/linux/commit/b92946e2919134ebe2a4083e4302236295ea2a73	X_refsource_confirm
https://oss.oracle.com/git/?p=redpatch.git%3Ba=commit%3Bh=4aae94d1c7b32316911c86176c0ed4f8ed62da73	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html	2023-02-13
http://rhn.redhat.com/errata/RHSA-2012-0743.html	2023-02-13
http://ubuntu.com/usn/usn-1529-1	2023-02-13
https://access.redhat.com/security/cve/CVE-2012-2119	2012-06-18
https://bugzilla.redhat.com/show_bug.cgi?id=814278	2012-06-18

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"				<= 3.4.4 Search vendor "Linux" for product "Linux Kernel" and version " <= 3.4.4"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				3.4 Search vendor "Linux" for product "Linux Kernel" and version "3.4"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				3.4.1 Search vendor "Linux" for product "Linux Kernel" and version "3.4.1"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				3.4.2 Search vendor "Linux" for product "Linux Kernel" and version "3.4.2"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				3.4.3 Search vendor "Linux" for product "Linux Kernel" and version "3.4.3"		-		Affected