Linux Kernel 2.6.32 drivers/vhost/net.c get_rx_bufs denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel 2.6.32. This impacts the function get_rx_bufs of the file drivers/vhost/net.c. The manipulation results in denial of service. This vulnerability is cataloged as CVE-2014-0055. There is no exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.32 (Operating System). It has been classified as critical. Affected is the function get_rx_bufs of the file drivers/vhost/net.c. 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 get_rx_bufs function in drivers/vhost/net.c in the vhost-net subsystem in the Linux kernel package before 2.6.32-431.11.2 on Red Hat Enterprise Linux (RHEL) 6 does not properly handle vhost_get_vq_desc errors, which allows guest OS users to cause a denial of service (host OS crash) via unspecified vectors.

The issue has been introduced in 12/03/2009. The weakness was shared 03/27/2014 with Red Hat as Bug 1062577 as not defined bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability is traded as CVE-2014-0055 since 12/03/2013. The exploitability is told to be easy. It is possible to launch the attack remotely. 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 1574 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 73222 (Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2014-3015)), 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 350400 (Amazon Linux Security Advisory for kernel: ALAS-2014-328).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at patchwork.ozlabs.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (92091), Tenable (73222), SecurityFocus (BID 66441†), Secunia (SA59386†) and Vulnerability Center (SBV-43761†). Further details are available at bugzilla.redhat.com. The entry VDB-12833 is related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Not Affected

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise MRG 2

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 73222
Nessus Name: Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2014-3015)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 881910
OpenVAS Name: CentOS Update for kernel CESA-2014:0328 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: patchwork.ozlabs.org

Timelineinfo

12/03/2009 🔍
12/03/2013 +1461 days 🔍
03/25/2014 +112 days 🔍
03/26/2014 +1 days 🔍
03/26/2014 +0 days 🔍
03/27/2014 +1 days 🔍
03/27/2014 +0 days 🔍
03/27/2014 +0 days 🔍
03/27/2014 +0 days 🔍
03/31/2014 +4 days 🔍
07/10/2014 +101 days 🔍
05/09/2026 +4321 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 1062577
Organization: Red Hat
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-0055 (🔍)
GCVE (CVE): GCVE-0-2014-0055
GCVE (VulDB): GCVE-100-12714

OVAL: 🔍

X-Force: 92091 - Linux Kernel get_rx_bufs() denial of service, High Risk
SecurityFocus: 66441 - Linux Kernel 'get_rx_bufs()' Function Denial of Service Vulnerability
Secunia: 59386 - SUSE update for kernel, Less Critical
Vulnerability Center: 43761 - Linux Kernel <2.6.32 Remote DoS in vhost-net due to Improper Error Handling in get_rx_bufs(), Medium

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 03/31/2014 12:46
Updated: 05/09/2026 03:01
Changes: 03/31/2014 12:46 (91), 05/24/2017 09:21 (1), 06/16/2021 09:51 (3), 05/09/2026 03:01 (21)
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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