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    CVE-2010-4255

    The fixup_page_fault function in arch/x86/traps.c in Xen 4.0.1 and earlier on 64-bit platforms, when paravirtualization is enabled, does not verify that kernel mode is used to call the handle_gdt_ldt_mapping_fault function, which allows guest OS users to cause a denial of service (host OS BUG_ON) via a crafted memory access.

    Published:Nov 29, 2010
    Last Modified:Apr 11, 2025
    EPS:Jan 25, 2011
    EPSS Score:0.00819
    CVSS Score:6.1

    Affected Products

    Vendor
    Citrix
    Product
    Xen
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2011-1583 (CVSS 6.9) — Multiple integer overflows in tools/libxc/xc_dom_bzimageloader.c in Xen 3.2, 3.3, 4.0, and 4.1 allow local use…
    CVE-2011-3262 (CVSS 2.1) — tools/libxc/xc_dom_bzimageloader.c in Xen 3.2, 3.3, 4.0, and 4.1 allows local users to cause a denial of servi…
    CVE-2011-1898 (CVSS 7.4) — Xen 4.1 before 4.1.1 and 4.0 before 4.0.2, when using PCI passthrough on Intel VT-d chipsets that do not have …
    CVE-2010-3699 (CVSS 2.7) — The backend driver in Xen 3.x allows guest OS users to cause a denial of service via a kernel thread leak, whi…
    CVE-2010-4238 (CVSS 5.5) — The vbd_create function in Xen 3.1.2, when the Linux kernel 2.6.18 on Red Hat Enterprise Linux (RHEL) 5 is use…
    CVE-2008-5716 (CVSS 7.2) — xend in Xen 3.3.0 does not properly restrict a guest VM's write access within the /local/domain xenstore direc…
    CVE-2008-4405 (CVSS 7.2) — xend in Xen 3.0.3 does not properly limit the contents of the /local/domain xenstore directory tree, and does …
    CVE-2010-4247 (CVSS 5.5) — The do_block_io_op function in (1) drivers/xen/blkback/blkback.c and (2) drivers/xen/blktap/blktap.c in Xen be…

    References

    http://lists.xensource.com/archives/html/xen-devel/2010-11/msg01650.html
    http://openwall.com/lists/oss-security/2010/11/30/5
    http://openwall.com/lists/oss-security/2010/11/30/8
    http://secunia.com/advisories/42884
    http://secunia.com/advisories/46397
    http://www.redhat.com/support/errata/RHSA-2011-0017.html
    http://www.securityfocus.com/archive/1/520102/100/0/threaded
    http://www.vmware.com/security/advisories/VMSA-2011-0012.html
    https://bugzilla.redhat.com/show_bug.cgi?id=658155
    http://lists.xensource.com/archives/html/xen-devel/2010-11/msg01650.html
    http://openwall.com/lists/oss-security/2010/11/30/5
    http://openwall.com/lists/oss-security/2010/11/30/8
    http://secunia.com/advisories/42884
    http://secunia.com/advisories/46397
    http://www.redhat.com/support/errata/RHSA-2011-0017.html
    http://www.securityfocus.com/archive/1/520102/100/0/threaded
    http://www.vmware.com/security/advisories/VMSA-2011-0012.html
    https://bugzilla.redhat.com/show_bug.cgi?id=658155

    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