Linux Kernel 3.3 PMD Table _split_huge_page access control

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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel 3.3. This affects the function _split_huge_page of the component PMD Table Handler. The manipulation results in access control. This vulnerability is reported as CVE-2012-1179. No exploit exists. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability classified as problematic has been found in Linux Kernel 3.3 (Operating System). Affected is the function _split_huge_page of the component PMD Table Handler. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on availability. CVE summarizes:

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.

The weakness was disclosed 03/15/2012 by Ulrich Obergfell (Website). The advisory is available at comments.gmane.org. The vendor was not involved in the coordination of the public release. This vulnerability is traded as CVE-2012-1179 since 02/14/2012. Local access is required to approach this attack. The requirement for exploitation is a authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 68676 (Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2012-2021)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 120426 (CentOS Security Update for Kernel (CESA-2012:0743)).

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at X-Force (74084), Tenable (68676), SecurityFocus (BID 52533†), OSVDB (80123†) and Secunia (SA48404†). The entry VDB-5437 is pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 68676
Nessus Name: Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2012-2021)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 881125
OpenVAS Name: CentOS Update for kernel CESA-2012:0743 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/14/2012 🔍
03/15/2012 +30 days 🔍
03/15/2012 +0 days 🔍
03/16/2012 +1 days 🔍
03/16/2012 +0 days 🔍
03/16/2012 +0 days 🔍
03/19/2012 +3 days 🔍
05/17/2012 +59 days 🔍
05/22/2012 +5 days 🔍
07/10/2012 +49 days 🔍
07/12/2013 +367 days 🔍
03/22/2021 +2810 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: comments.gmane.org
Researcher: Ulrich Obergfell
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-1179 (🔍)
GCVE (CVE): GCVE-0-2012-1179
GCVE (VulDB): GCVE-100-4842

OVAL: 🔍

X-Force: 74084
SecurityFocus: 52533 - Linux Kernel '__split_huge_page()' Race Condition Local Denial of Service Vulnerability
Secunia: 48404 - Linux Kernel "__split_huge_page()" Race Condition Denial of Service Vulnerabilit, Not Critical
OSVDB: 80123
SecurityTracker: 1027084 - Linux Kernel KVM pmd_none_or_clear_bad() Bug Lets Local Guest Users Cause Denial of Service Conditions on the Host System
Vulnerability Center: 35516 - Linux Kernel Before 3.3.1 Local Denial of Service Vulnerability, Medium

See also: 🔍

Entryinfo

Created: 03/19/2012 09:43
Updated: 03/22/2021 07:40
Changes: 03/19/2012 09:43 (76), 04/14/2017 14:07 (13), 03/22/2021 07:40 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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