Linux Kernel up to 3.12.7 on AMD K7/K8 restore_fpu_checking access control

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 3.12.7 on AMD K7/K8. It has been declared as problematic. This issue affects the function restore_fpu_checking. The manipulation results in access control. This vulnerability is cataloged as CVE-2014-1438. There is no exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 3.12.7 on AMD K7/K8 (Operating System). Affected is the function restore_fpu_checking. 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 restore_fpu_checking function in arch/x86/include/asm/fpu-internal.h in the Linux kernel before 3.12.8 on the AMD K7 and K8 platforms does not clear pending exceptions before proceeding to an EMMS instruction, which allows local users to cause a denial of service (task kill) or possibly gain privileges via a crafted application.

The weakness was shared 01/18/2014 by halfdog as confirmed git commit (GIT Repository). The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2014-1438 since 01/13/2014. Local access is required to approach this attack. The exploitation doesn't require any form of 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 72030 (Fedora 20 : kernel-3.12.8-300.fc20 (2014-1062)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195513 (Ubuntu Security Notification for Linux-ec2 Vulnerabilities (USN-2234-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.

The vulnerability is also documented in the databases at X-Force (90031), Tenable (72030), SecurityFocus (BID 64781†) and Vulnerability Center (SBV-43122†). The entries VDB-12073 and VDB-12137 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.2
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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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: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 72030
Nessus Name: Fedora 20 : kernel-3.12.8-300.fc20 (2014-1062)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 867317
OpenVAS Name: Fedora Update for kernel FEDORA-2014-1062
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 26bef1318adc1b3a530ecc807ef99346db2aa8b0

Timelineinfo

12/28/2013 🔍
12/28/2013 +0 days 🔍
01/13/2014 +16 days 🔍
01/18/2014 +5 days 🔍
01/18/2014 +0 days 🔍
01/20/2014 +2 days 🔍
02/03/2014 +14 days 🔍
03/24/2015 +414 days 🔍
01/31/2022 +2505 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-2113-1
Researcher: halfdog
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-1438 (🔍)
GCVE (CVE): GCVE-0-2014-1438
GCVE (VulDB): GCVE-100-66114

OVAL: 🔍

X-Force: 90031
SecurityFocus: 64781 - Linux Kernel 'fpu-internal.h' Local Denial of Service Vulnerability
SecurityTracker: 1029592
Vulnerability Center: 43122 - Linux Kernel Before 3.12.8 Local DoS Vulnerability via a Crafted Application, Medium

See also: 🔍

Entryinfo

Created: 03/24/2015 15:54
Updated: 01/31/2022 12:06
Changes: 03/24/2015 15:54 (72), 05/20/2017 10:16 (6), 01/31/2022 11:59 (4), 01/31/2022 12:06 (1)
Complete: 🔍
Cache ID: 216:F68:103

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