Debian: DSA-3633-1: xen security update

    Date27 Jul 2016
    CategoryDebian
    63
    Posted ByLinuxSecurity Advisories
    Multiple vulnerabilities have been discovered in the Xen hypervisor. The Common Vulnerabilities and Exposures project identifies the following problems:
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    Debian Security Advisory DSA-3633-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                       Moritz Muehlenhoff
    July 27, 2016                         https://www.debian.org/security/faq
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    Package        : xen
    CVE ID         : CVE-2015-8338 CVE-2016-4480 CVE-2016-4962 CVE-2016-5242 
                     CVE-2016-6258
    
    Multiple vulnerabilities have been discovered in the Xen hypervisor. The
    Common Vulnerabilities and Exposures project identifies the following
    problems:
    
    CVE-2015-8338
    
        Julien Grall discovered that Xen on ARM was susceptible to denial
        of service via long running memory operations.
    
    CVE-2016-4480
    
        Jan Beulich discovered that incorrect page table handling could
        result in privilege escalation inside a Xen guest instance.
    
    CVE-2016-4962
    
        Wei Liu discovered multiple cases of missing input sanitising in
        libxl which could result in denial of service.
    
    CVE-2016-5242
    
        Aaron Cornelius discovered that incorrect resource handling on
        ARM systems could result in denial of service.
    
    CVE-2016-6258
    
        Jeremie Boutoille discovered that incorrect pagetable handling in
        PV instances could result in guest to host privilege escalation.
    
    For the stable distribution (jessie), these problems have been fixed in
    version 4.4.1-9+deb8u6.
    
    For the unstable distribution (sid), these problems will be fixed soon.
    
    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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