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    Debian: DSA-4369-1: xen security update

    Date 14 Jan 2019
    6910
    Posted By Anthony Pell
    Multiple vulnerabilities have been discovered in the Xen hypervisor: CVE-2018-19961 / CVE-2018-19962
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    Debian Security Advisory DSA-4369-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                       Moritz Muehlenhoff
    January 14, 2019                      https://www.debian.org/security/faq
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    Package        : xen
    CVE ID         : CVE-2018-19961 CVE-2018-19962 CVE-2018-19965
                     CVE-2018-19966 CVE-2018-19967
    
    Multiple vulnerabilities have been discovered in the Xen hypervisor:
    
    CVE-2018-19961 / CVE-2018-19962
    
        Paul Durrant discovered that incorrect TLB handling could result in
        denial of service, privilege escalation or information leaks.
    
    CVE-2018-19965
    
        Matthew Daley discovered that incorrect handling of the INVPCID
        instruction could result in denial of service by PV guests.
    
    CVE-2018-19966
    
        It was discovered that a regression in the fix to address
        CVE-2017-15595 could result in denial of service, privilege
        escalation or information leaks by a PV guest.
    
    CVE-2018-19967
    
        It was discovered that an error in some Intel CPUs could result in
        denial of service by a guest instance.
        
    For the stable distribution (stretch), these problems have been fixed in
    version 4.8.5+shim4.10.2+xsa282-1+deb9u11.
    
    We recommend that you upgrade your xen packages.
    
    For the detailed security status of xen please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/xen
    
    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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