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    CVE-2009-4021

    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.

    Published:Oct 22, 2009
    Last Modified:Apr 23, 2026
    EPS:Nov 25, 2009
    EPSS Score:0.00053
    CVSS Score:4.9

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Mrg

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High