Linux Security
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    Debian: DSA-2337-1: xen security update

    Date
    127
    Posted By
    Several vulnerabilities were discovered in the Xen virtual machine hypervisor. CVE-2011-1166
    
    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-2337-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                           Thijs Kinkhorst
    November 6, 2011                       https://www.debian.org/security/faq
    - -------------------------------------------------------------------------
    
    Package        : xen
    Vulnerability  : several vulnerabilities
    Problem type   : local
    Debian-specific: no
    CVE ID         : CVE-2011-1166 CVE-2011-1583 CVE-2011-1898 CVE-2011-3262
    
    Several vulnerabilities were discovered in the Xen virtual machine
    hypervisor. 
    
    CVE-2011-1166
    
      A 64-bit guest can get one of its vCPU'ss into non-kernel
      mode without first providing a valid non-kernel pagetable,
      thereby locking up the host system.
    
    CVE-2011-1583, CVE-2011-3262
    
      Local users can cause a denial of service and possibly execute
      arbitrary code via a crafted paravirtualised guest kernel image.
    
    CVE-2011-1898
    
      When using PCI passthrough on Intel VT-d chipsets that do not
      have interrupt remapping, guest OS can users to gain host OS
      privileges by writing to the interrupt injection registers.
    
    The oldstable distribution (lenny) contains a different version of Xen
    not affected by these problems.
    
    For the stable distribution (squeeze), this problem has been fixed in
    version 4.0.1-4.
    
    For the testing (wheezy) and unstable distribution (sid), this problem
    has been fixed in version 4.1.1-1.
    
    We recommend that you upgrade your xen packages.
    
    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://www.debian.org/security/
    
    Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.
    

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