Linux Kernel up to 2.6.38.8 vma_to_resize numeric error

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.8$0-$5k0.00

A vulnerability classified as problematic has been found in Linux Kernel up to 2.6.38.8 (Operating System). This affects the function vma_to_resize. The manipulation with an unknown input leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on availability. The summary by CVE is:

Integer overflow in the vma_to_resize function in mm/mremap.c in the Linux kernel before 2.6.39 allows local users to cause a denial of service (BUG_ON and system crash) via a crafted mremap system call that expands a memory mapping.

The issue has been introduced in 03/14/2011. The weakness was disclosed 06/13/2012 by Robert Swiecki (GitHub Repository). The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2011-2496 since 06/15/2011. The exploitability is told to be easy. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

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 56569 (CentOS 5 : kernel (CESA-2011:1386)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 216036 (VMware ESXi and ESX Third Party Libraries Updates (VMSA-2012-0013)).

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 Tenable (56569), SecurityFocus (BID 47321†) and Vulnerability Center (SBV-32812†). The entries VDB-4416, VDB-4468, VDB-4544 and VDB-5260 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.8

VulDB Base Score: 6.2
VulDB Temp Score: 5.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 56569
Nessus Name: CentOS 5 : kernel (CESA-2011:1386)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 881021
OpenVAS Name: CentOS Update for kernel CESA-2011:1386 centos5 i386
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: 982134ba62618c2d69fbbbd166d0a11ee3b7e3d8

Timelineinfo

03/14/2011 🔍
04/12/2011 +29 days 🔍
04/12/2011 +0 days 🔍
06/15/2011 +64 days 🔍
08/22/2011 +68 days 🔍
06/13/2012 +296 days 🔍
06/13/2012 +0 days 🔍
03/23/2015 +1013 days 🔍
12/03/2021 +2447 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2011:1241
Researcher: Robert Swiecki
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-2496 (🔍)
GCVE (CVE): GCVE-0-2011-2496
GCVE (VulDB): GCVE-100-60957

OVAL: 🔍
IAVM: 🔍

SecurityFocus: 47321 - Linux Kernel 'mremap()' Local Denial of Service Vulnerability
Vulnerability Center: 32812 - Linux Kernel before 2.6.39-rc3 Local Denial of Service Vulnerability via the \x27mremap()\x27 Call, Low

See also: 🔍

Entryinfo

Created: 03/23/2015 04:50 PM
Updated: 12/03/2021 07:56 PM
Changes: 03/23/2015 04:50 PM (63), 04/15/2019 12:49 PM (14), 12/03/2021 07:48 PM (4), 12/03/2021 07:56 PM (2)
Complete: 🔍
Cache ID: 18:D3D:40

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