Hash: SHA512

Package        : xen
Version        : 4.1.6.lts1-9
CVE ID         : CVE-2017-10912 CVE-2017-10913 CVE-2017-10914 CVE-2017-10915 
                 CVE-2017-10918 CVE-2017-10920 CVE-2017-10921 CVE-2017-10922 
                 CVE-2017-12135 CVE-2017-12137 CVE-2017-12855 CVE-2017-14316 
                 CVE-2017-14317 CVE-2017-14318 CVE-2017-14319

Multiple vulnerabilities have been discovered in the Xen hypervisor:

CVE-2017-10912

    Jann Horn discovered that incorrectly handling of page transfers might
    result in privilege escalation.

CVE-2017-10913 / CVE-2017-10914

    Jann Horn discovered that race conditions in grant handling might
    result in information leaks or privilege escalation.

CVE-2017-10915

    Andrew Cooper discovered that incorrect reference counting with
    shadow paging might result in privilege escalation.

CVE-2017-10918

    Julien Grall discovered that incorrect error handling in
    physical-to-machine memory mappings may result in privilege
    escalation, denial of service or an information leak.

CVE-2017-10920 / CVE-2017-10921 / CVE-2017-10922

    Jan Beulich discovered multiple places where reference
    counting on grant table operations was incorrect, resulting
    in potential privilege escalation

CVE-2017-12135

    Jan Beulich found multiple problems in the handling of
    transitive grants which could result in denial of service
    and potentially privilege escalation.

CVE-2017-12137

    Andrew Cooper discovered that incorrect validation of
    grants may result in privilege escalation.

CVE-2017-12855

    Jan Beulich discovered that incorrect grant status handling, thus
    incorrectly informing the guest that the grant is no longer in use.

CVE-2017-14316

    Matthew Daley discovered that the NUMA node parameter wasn't
    verified which which may result in privilege escalation.

CVE-2017-14317

    Eric Chanudet discovered that a race conditions in cxenstored might
    result in information leaks or privilege escalation.


CVE-2017-14318

    Matthew Daley discovered that incorrect validation of
    grants may result in a denial of service.

CVE-2017-14319

    Andrew Cooper discovered that insufficient grant unmapping
    checks may result in denial of service and privilege escalation.

For Debian 7 "Wheezy", these problems have been fixed in version
4.1.6.lts1-9.

We recommend that you upgrade your xen packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS