Debian: DSA-4236-1: xen security update

    Date27 Jun 2018
    CategoryDebian
    7370
    Posted ByAnthony Pell
    Multiple vulnerabilities have been discovered in the Xen hypervisor: CVE-2018-12891
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    Debian Security Advisory DSA-4236-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                       Moritz Muehlenhoff
    June 27, 2018                         https://www.debian.org/security/faq
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    Package        : xen
    CVE ID         : CVE-2018-12891 CVE-2018-12892 CVE-2018-12893
    
    Multiple vulnerabilities have been discovered in the Xen hypervisor:
    
    CVE-2018-12891
    
        It was discovered that insufficient validation of PV MMU operations
        may result in denial of service.
    
    CVE-2018-12892
    
        It was discovered that libxl fails to honour the 'readonly' flag on
        HVM-emulated SCSI disks.
        
    CVE-2018-12893
    
        It was discovered that incorrect implementation of debug exception
        checks could result in denial of service.
    
    For the stable distribution (stretch), these problems have been fixed in
    version 4.8.3+xsa267+shim4.10.1+xsa267-1+deb9u9.
    
    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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