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Debian Security Advisory DSA-3140-1                   security@debian.org
http://www.debian.org/security/                        Moritz Muehlenhoff
January 27, 2015                       http://www.debian.org/security/faq
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Package        : xen
CVE ID         : CVE-2014-8594 CVE-2014-8595 CVE-2014-8866 CVE-2014-8867 
                 CVE-2014-9030

Multiple security issues have been discovered in the Xen virtualisation
solution which may result in denial of service, information disclosure
or privilege escalation.

CVE-2014-8594

    Roger Pau Monne and Jan Beulich discovered that incomplete
    restrictions on MMU update hypercalls may result in privilege
    escalation.

CVE-2014-8595

    Jan Beulich discovered that missing privilege level checks in the
    x86 emulation of far branches may result in privilege escalation.

CVE-2014-8866

    Jan Beulich discovered that an error in compatibility mode hypercall
    argument translation may result in denial of service.

CVE-2014-8867

    Jan Beulich discovered that an insufficient restriction in
    acceleration support for the "REP MOVS" instruction may result in
    denial of service.

CVE-2014-9030

    Andrew Cooper discovered a page reference leak in MMU_MACHPHYS_UPDATE
    handling, resulting in denial of service.

For the stable distribution (wheezy), these problems have been fixed in
version 4.1.4-3+deb7u4.

For the upcoming stable distribution (jessie), these problems have been
fixed in version 4.4.1-4.

For the unstable distribution (sid), these problems have been fixed in
version 4.4.1-4.

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: debian-security-announce@lists.debian.org

Debian: DSA-3140-1: xen security update

January 27, 2015
Multiple security issues have been discovered in the Xen virtualisation solution which may result in denial of service, information disclosure or privilege escalation

Summary

Multiple security issues have been discovered in the Xen virtualisation
solution which may result in denial of service, information disclosure
or privilege escalation.

CVE-2014-8594

Roger Pau Monne and Jan Beulich discovered that incomplete
restrictions on MMU update hypercalls may result in privilege
escalation.

CVE-2014-8595

Jan Beulich discovered that missing privilege level checks in the
x86 emulation of far branches may result in privilege escalation.

CVE-2014-8866

Jan Beulich discovered that an error in compatibility mode hypercall
argument translation may result in denial of service.

CVE-2014-8867

Jan Beulich discovered that an insufficient restriction in
acceleration support for the "REP MOVS" instruction may result in
denial of service.

CVE-2014-9030

Andrew Cooper discovered a page reference leak in MMU_MACHPHYS_UPDATE
handling, resulting in denial of service.

For the stable distribution (wheezy), these problems have been fixed in
version 4.1.4-3+deb7u4.

For the upcoming stable distribution (jessie), these problems have been
fixed in version 4.4.1-4.

For the unstable distribution (sid), these problems have been fixed in
version 4.4.1-4.

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: debian-security-announce@lists.debian.org

Severity
Package : xen
CVE ID : CVE-2014-8594 CVE-2014-8595 CVE-2014-8866 CVE-2014-8867
CVE-2014-9030

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