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    CVE-2009-2692

    The Linux kernel 2.6.0 through 2.6.30.4, and 2.4.4 through 2.4.37.4, does not initialize all function pointers for socket operations in proto_ops structures, which allows local users to trigger a NULL pointer dereference and gain privileges by using mmap to map page zero, placing arbitrary code on this page, and then invoking an unavailable operation, as demonstrated by the sendpage operation (sock_sendpage function) on a PF_PPPOX socket.

    Published:Aug 13, 2009
    Last Modified:Apr 23, 2026
    EPS:Aug 14, 2009
    EPSS Score:0.17556
    CVSS Score:7.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation
    Vendor
    Redhat
    Product
    Enterprise Mrg
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Suse
    Product
    Linux Enterprise Real Time

    Exploits

    http://archives.neohapsis.com/archives/fulldisclosure/2009-08/0174.htmlhttp://blog.cr0.org/2009/08/linux-null-pointer-dereference-due-to.htmlhttp://www.exploit-db.com/exploits/19933http://www.securityfocus.com/bid/36038http://archives.neohapsis.com/archives/fulldisclosure/2009-08/0174.htmlhttp://blog.cr0.org/2009/08/linux-null-pointer-dereference-due-to.htmlhttp://www.exploit-db.com/exploits/19933http://www.securityfocus.com/bid/36038https://www.exploit-db.com/exploits/9477https://github.com/jdvalentini/CVE-2009-2692https://www.exploit-db.com/exploits/19933https://www.exploit-db.com/exploits/9435https://www.exploit-db.com/exploits/9436https://www.exploit-db.com/exploits/9479https://www.exploit-db.com/exploits/9545https://www.exploit-db.com/exploits/9598https://www.exploit-db.com/exploits/9641

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://archives.neohapsis.com/archives/fulldisclosure/2009-08/0174.html
    http://blog.cr0.org/2009/08/linux-null-pointer-dereference-due-to.html
    http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.37.y.git%3Ba=commit%3Bh=c18d0fe535a73b219f960d1af3d0c264555a12e3
    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e694958388c50148389b0e9b9e9e8945cf0f1b98
    http://grsecurity.net/~spender/wunderbar_emporium.tgz
    http://lists.opensuse.org/opensuse-security-announce/2009-09/msg00001.html
    http://rhn.redhat.com/errata/RHSA-2009-1222.html
    http://rhn.redhat.com/errata/RHSA-2009-1223.html
    http://secunia.com/advisories/36278
    http://secunia.com/advisories/36289
    http://secunia.com/advisories/36327
    http://secunia.com/advisories/36430
    http://secunia.com/advisories/37298
    http://secunia.com/advisories/37471
    http://support.avaya.com/css/P8/documents/100067254
    http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0121
    http://www.debian.org/security/2009/dsa-1865
    http://www.exploit-db.com/exploits/19933
    http://www.exploit-db.com/exploits/9477
    http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.37.5
    http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.5
    http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc6
    http://www.mandriva.com/security/advisories?name=MDVSA-2009:233
    http://www.openwall.com/lists/oss-security/2009/08/14/1
    http://www.redhat.com/support/errata/RHSA-2009-1233.html
    http://www.securityfocus.com/archive/1/505751/100/0/threaded
    http://www.securityfocus.com/archive/1/505912/100/0/threaded
    http://www.securityfocus.com/archive/1/507985/100/0/threaded
    http://www.securityfocus.com/archive/1/512019/100/0/threaded
    http://www.securityfocus.com/bid/36038
    http://www.vmware.com/security/advisories/VMSA-2009-0016.html
    http://www.vupen.com/english/advisories/2009/2272
    http://www.vupen.com/english/advisories/2009/3316
    http://zenthought.org/content/file/android-root-2009-08-16-source
    https://bugzilla.redhat.com/show_bug.cgi?id=516949
    https://issues.rpath.com/browse/RPL-3103
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11526
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11591
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8657
    http://archives.neohapsis.com/archives/fulldisclosure/2009-08/0174.html
    http://blog.cr0.org/2009/08/linux-null-pointer-dereference-due-to.html
    http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.4.37.y.git%3Ba=commit%3Bh=c18d0fe535a73b219f960d1af3d0c264555a12e3
    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e694958388c50148389b0e9b9e9e8945cf0f1b98
    http://grsecurity.net/~spender/wunderbar_emporium.tgz
    http://lists.opensuse.org/opensuse-security-announce/2009-09/msg00001.html
    http://rhn.redhat.com/errata/RHSA-2009-1222.html
    http://rhn.redhat.com/errata/RHSA-2009-1223.html
    http://secunia.com/advisories/36278
    http://secunia.com/advisories/36289
    http://secunia.com/advisories/36327
    http://secunia.com/advisories/36430
    http://secunia.com/advisories/37298
    http://secunia.com/advisories/37471
    http://support.avaya.com/css/P8/documents/100067254
    http://wiki.rpath.com/wiki/Advisories:rPSA-2009-0121
    http://www.debian.org/security/2009/dsa-1865
    http://www.exploit-db.com/exploits/19933
    http://www.exploit-db.com/exploits/9477
    http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.37.5
    http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.5
    http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc6
    http://www.mandriva.com/security/advisories?name=MDVSA-2009:233
    http://www.openwall.com/lists/oss-security/2009/08/14/1
    http://www.redhat.com/support/errata/RHSA-2009-1233.html
    http://www.securityfocus.com/archive/1/505751/100/0/threaded
    http://www.securityfocus.com/archive/1/505912/100/0/threaded
    http://www.securityfocus.com/archive/1/507985/100/0/threaded
    http://www.securityfocus.com/archive/1/512019/100/0/threaded
    http://www.securityfocus.com/bid/36038
    http://www.vmware.com/security/advisories/VMSA-2009-0016.html
    http://www.vupen.com/english/advisories/2009/2272
    http://www.vupen.com/english/advisories/2009/3316
    http://zenthought.org/content/file/android-root-2009-08-16-source
    https://bugzilla.redhat.com/show_bug.cgi?id=516949
    https://issues.rpath.com/browse/RPL-3103
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11526
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11591
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8657

    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