Linux Kernel up to 2.6.38.8 ext4_fill_super denial of service

CVSS Meta Temp Score
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CTI Interest Score
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3.8$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel up to 2.6.38.8. This vulnerability affects the function ext4_fill_super. The manipulation results in denial of service. This vulnerability is cataloged as CVE-2011-2493. There is no exploit available.

Detailsinfo

A vulnerability was found in Linux Kernel up to 2.6.38.8 (Operating System). It has been classified as problematic. Affected is the function ext4_fill_super. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

The ext4_fill_super function in fs/ext4/super.c in the Linux kernel before 2.6.39 does not properly initialize a certain error-report data structure, which allows local users to cause a denial of service (OOPS) by attempting to mount a crafted ext4 filesystem.

The issue has been introduced in 03/14/2011. The weakness was shared 06/13/2012 (Website). The advisory is available at github.com. This vulnerability is traded as CVE-2011-2493 since 06/15/2011. The exploitability is told to be easy. 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.

The vulnerability was handled as a non-public zero-day exploit for at least 457 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 55923 (Ubuntu 11.04 : linux vulnerabilities (USN-1193-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195247 (Ubuntu Security Notice for Linux-lts-Backport-Natty Vulnerabilities (USN-1256-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (76264), Tenable (55923) and Vulnerability Center (SBV-41778†). The entries VDB-4416, VDB-4544, VDB-61074 and VDB-61073 are related to this item. 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: 4.0
VulDB Meta Temp Score: 3.8

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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: 55923
Nessus Name: Ubuntu 11.04 : linux vulnerabilities (USN-1193-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 840726
OpenVAS Name: Ubuntu Update for linux USN-1193-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: 0449641130f5652b344ef6fa39fa019d7e94660a

Timelineinfo

03/14/2011 🔍
04/05/2011 +22 days 🔍
06/15/2011 +71 days 🔍
06/13/2012 +364 days 🔍
06/13/2012 +0 days 🔍
10/06/2013 +480 days 🔍
03/23/2015 +533 days 🔍
01/15/2025 +3586 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-1193-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-2493 (🔍)
GCVE (CVE): GCVE-0-2011-2493
GCVE (VulDB): GCVE-100-60954

OVAL: 🔍

X-Force: 76264
SecurityFocus: 48383
Vulnerability Center: 41778 - Linux Kernel Prior to 2.6.39 Local DOS Vulnerability Via a Mounted ext4 Filesystem, Medium

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 01/15/2025 22:28
Changes: 03/23/2015 16:50 (62), 05/12/2017 20:49 (5), 12/03/2021 18:56 (5), 12/03/2021 19:03 (3), 01/15/2025 22:28 (22)
Complete: 🔍
Cache ID: 216:AA0:103

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

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