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    CVE-2010-3081

    The compat_alloc_user_space functions in include/asm/compat.h files in the Linux kernel before 2.6.36-rc4-git2 on 64-bit platforms do not properly allocate the userspace memory required for the 32-bit compatibility layer, which allows local users to gain privileges by leveraging the ability of the compat_mc_getsockopt function (aka the MCAST_MSFILTER getsockopt support) to control a certain length value, related to a "stack pointer underflow" issue, as exploited in the wild in September 2010.

    Published:Sep 15, 2010
    Last Modified:Apr 11, 2025
    EPS:Sep 24, 2010
    EPSS Score:0.19924
    CVSS Score:7.8

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Mrg
    Vendor
    Redhat
    Product
    Rhel Els
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Suse
    Product
    Suse Linux Enterprise Desktop
    Vendor
    Suse
    Product
    Suse Linux Enterprise Server
    Vendor
    Vmware
    Product
    Esx

    Exploits

    https://access.redhat.com/kb/docs/DOC-40265https://access.redhat.com/kb/docs/DOC-40265https://www.exploit-db.com/exploits/15024

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    References

    http://archives.neohapsis.com/archives/fulldisclosure/2010-09/0273.html
    http://archives.neohapsis.com/archives/fulldisclosure/2010-09/0278.html
    http://blog.ksplice.com/2010/09/cve-2010-3081/
    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c41d68a513c71e35a14f66d71782d27a79a81ea6
    http://isc.sans.edu/diary.html?storyid=9574
    http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
    http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00003.html
    http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
    http://marc.info/?l=oss-security&m=128461522230211&w=2
    http://secunia.com/advisories/42384
    http://secunia.com/advisories/43315
    http://sota.gen.nz/compat1/
    http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.36-rc4-git2.log
    http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
    http://www.mandriva.com/security/advisories?name=MDVSA-2010:214
    http://www.mandriva.com/security/advisories?name=MDVSA-2010:247
    http://www.redhat.com/support/errata/RHSA-2010-0758.html
    http://www.redhat.com/support/errata/RHSA-2010-0842.html
    http://www.redhat.com/support/errata/RHSA-2010-0882.html
    http://www.securityfocus.com/archive/1/514938/30/30/threaded
    http://www.securityfocus.com/archive/1/516397/100/0/threaded
    http://www.vmware.com/security/advisories/VMSA-2010-0017.html
    http://www.vmware.com/security/advisories/VMSA-2011-0003.html
    http://www.vupen.com/english/advisories/2010/3083
    http://www.vupen.com/english/advisories/2010/3117
    http://www.vupen.com/english/advisories/2011/0298
    https://access.redhat.com/kb/docs/DOC-40265
    https://bugzilla.redhat.com/show_bug.cgi?id=634457
    http://archives.neohapsis.com/archives/fulldisclosure/2010-09/0273.html
    http://archives.neohapsis.com/archives/fulldisclosure/2010-09/0278.html
    http://blog.ksplice.com/2010/09/cve-2010-3081/
    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c41d68a513c71e35a14f66d71782d27a79a81ea6
    http://isc.sans.edu/diary.html?storyid=9574
    http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
    http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00003.html
    http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
    http://marc.info/?l=oss-security&m=128461522230211&w=2
    http://secunia.com/advisories/42384
    http://secunia.com/advisories/43315
    http://sota.gen.nz/compat1/
    http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.36-rc4-git2.log
    http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
    http://www.mandriva.com/security/advisories?name=MDVSA-2010:214
    http://www.mandriva.com/security/advisories?name=MDVSA-2010:247
    http://www.redhat.com/support/errata/RHSA-2010-0758.html
    http://www.redhat.com/support/errata/RHSA-2010-0842.html
    http://www.redhat.com/support/errata/RHSA-2010-0882.html
    http://www.securityfocus.com/archive/1/514938/30/30/threaded
    http://www.securityfocus.com/archive/1/516397/100/0/threaded
    http://www.vmware.com/security/advisories/VMSA-2010-0017.html
    http://www.vmware.com/security/advisories/VMSA-2011-0003.html
    http://www.vupen.com/english/advisories/2010/3083
    http://www.vupen.com/english/advisories/2010/3117
    http://www.vupen.com/english/advisories/2011/0298
    https://access.redhat.com/kb/docs/DOC-40265
    https://bugzilla.redhat.com/show_bug.cgi?id=634457

    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