CVE-2012-1179

kernel: thp: __split_huge_page() mapcount != page_mapcount BUG_ON()

Severity Score

5.2

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The Linux kernel before 3.3.1, when KVM is used, allows guest OS users to cause a denial of service (host OS crash) by leveraging administrative access to the guest OS, related to the pmd_none_or_clear_bad function and page faults for huge pages.

El kernel de Linux en versiones anteriores a la v3.3.1, cuando se utiliza KVM, permite causar una denegación de servicio (caída del sistema operativo 'Host') a los usuarios de un sistema operativo invitado, aprovechando el acceso administrativo al sistema operativo invitado. Se trata de una vulnerabilidad relacionada con la función pmd_none_or_clear_bad y un fallo de página en páginas grandes.

*Credits: N/A

CVSS Scores

NISTv2 5.2

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

2012-02-14 CVE Reserved
2012-05-01 CVE Published
2023-03-08 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-264: Permissions, Privileges, and Access Controls

CAPEC

References (12)

URL	Tag	Source
http://secunia.com/advisories/48404	Third Party Advisory
http://secunia.com/advisories/48898	Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.1	X_refsource_confirm
http://www.openwall.com/lists/oss-security/2012/03/15/7	Mailing List
http://www.securitytracker.com/id?1027084	Vdb Entry
https://github.com/torvalds/linux/commit/4a1d704194a441bf83c636004a479e01360ec850	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2012-March/075781.html	2017-12-29
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html	2017-12-29
http://marc.info/?l=bugtraq&m=139447903326211&w=2	2017-12-29
http://rhn.redhat.com/errata/RHSA-2012-0743.html	2017-12-29
https://bugzilla.redhat.com/show_bug.cgi?id=803793	2012-06-26
https://access.redhat.com/security/cve/CVE-2012-1179	2012-06-26

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"				<= 3.3 Search vendor "Linux" for product "Linux Kernel" and version " <= 3.3"		rc7		Affected