CVE-2009-4021

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.

Category

4.9
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.06%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2009-4021?
CVE-2009-4021 has been scored as a medium severity vulnerability.
How to fix CVE-2009-4021?
To fix CVE-2009-4021, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-4021 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2009-4021 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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