4.9
MEDIUM CVSS 2.0
CVE-2009-4021
FUSE Invalid Pointer Dereference Denial of Service Vulnerability
Description

The fuse_direct_io function in fs/fuse/file.c in the fuse subsystem in the Linux kernel before 2.6.32-rc7 might allow attackers to cause a denial of service (invalid pointer dereference and OOPS) via vectors possibly related to a memory-consumption attack.

INFO

Published Date :

Nov. 25, 2009, 4:30 p.m.

Last Modified :

April 9, 2025, 12:30 a.m.

Remotely Exploit :

No
Affected Products

The following products are affected by CVE-2009-4021 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
Solution
A vulnerability in the Linux kernel could allow for a denial of service.
  • Update the affected kernel packages.
  • Update the affected packages.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2009-4021.

URL Resource
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f60311d5f7670d9539b424e4ed8b5c0872fc9e83
http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html
http://secunia.com/advisories/37909
http://secunia.com/advisories/38017
http://support.avaya.com/css/P8/documents/100073666
http://www.debian.org/security/2010/dsa-2005
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc7
http://www.openwall.com/lists/oss-security/2009/11/19/1
http://www.openwall.com/lists/oss-security/2009/11/24/5
http://www.redhat.com/support/errata/RHSA-2010-0041.html
http://www.securityfocus.com/bid/37069
https://bugzilla.redhat.com/show_bug.cgi?id=538734
https://exchange.xforce.ibmcloud.com/vulnerabilities/54358
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10516
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6955
https://rhn.redhat.com/errata/RHSA-2010-0046.html
https://rhn.redhat.com/errata/RHSA-2010-0095.html
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f60311d5f7670d9539b424e4ed8b5c0872fc9e83
http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html
http://secunia.com/advisories/37909
http://secunia.com/advisories/38017
http://support.avaya.com/css/P8/documents/100073666
http://www.debian.org/security/2010/dsa-2005
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc7
http://www.openwall.com/lists/oss-security/2009/11/19/1
http://www.openwall.com/lists/oss-security/2009/11/24/5
http://www.redhat.com/support/errata/RHSA-2010-0041.html
http://www.securityfocus.com/bid/37069
https://bugzilla.redhat.com/show_bug.cgi?id=538734
https://exchange.xforce.ibmcloud.com/vulnerabilities/54358
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10516
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6955
https://rhn.redhat.com/errata/RHSA-2010-0046.html
https://rhn.redhat.com/errata/RHSA-2010-0095.html
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2009-4021 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2009-4021 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2009-4021 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2009-4021 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f60311d5f7670d9539b424e4ed8b5c0872fc9e83
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00002.html
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2009-12/msg00005.html
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html
    Added Reference http://secunia.com/advisories/37909
    Added Reference http://secunia.com/advisories/38017
    Added Reference http://support.avaya.com/css/P8/documents/100073666
    Added Reference http://www.debian.org/security/2010/dsa-2005
    Added Reference http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc7
    Added Reference http://www.openwall.com/lists/oss-security/2009/11/19/1
    Added Reference http://www.openwall.com/lists/oss-security/2009/11/24/5
    Added Reference http://www.redhat.com/support/errata/RHSA-2010-0041.html
    Added Reference http://www.securityfocus.com/bid/37069
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=538734
    Added Reference https://exchange.xforce.ibmcloud.com/vulnerabilities/54358
    Added Reference https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10516
    Added Reference https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6955
    Added Reference https://rhn.redhat.com/errata/RHSA-2010-0046.html
    Added Reference https://rhn.redhat.com/errata/RHSA-2010-0095.html
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Feb. 13, 2023

    Action Type Old Value New Value
    Removed Reference http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f60311d5f7670d9539b424e4ed8b5c0872fc9e83 [No Types Assigned]
    Added Reference http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f60311d5f7670d9539b424e4ed8b5c0872fc9e83 [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 19, 2017

    Action Type Old Value New Value
    Removed Reference http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:10516 [No Types Assigned]
    Removed Reference http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:6955 [No Types Assigned]
    Added Reference https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6955 [No Types Assigned]
    Added Reference https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10516 [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 17, 2017

    Action Type Old Value New Value
    Removed Reference http://xforce.iss.net/xforce/xfdb/54358 [No Types Assigned]
    Added Reference https://exchange.xforce.ibmcloud.com/vulnerabilities/54358 [No Types Assigned]
  • Initial Analysis by [email protected]

    Nov. 25, 2009

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 4.9
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.06 }} 0.00%

score

0.14407

percentile