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CVE-2016-7777

CVE-2016-7777

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Xen 4.7.x and earlier does not properly honor CR0.TS and CR0.EM, which allows local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it.

CVSS 6.3 · Medium · EPSS 0.3% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • xen Debian:12

    Affected ranges
    • ECOSYSTEM: < 4.8.0~rc3-1

    Update to 4.8.0~rc3-1

  • xen Debian:13

    Affected ranges
    • ECOSYSTEM: < 4.8.0~rc3-1

    Update to 4.8.0~rc3-1

  • xen Debian:14

    Affected ranges
    • ECOSYSTEM: < 4.8.0~rc3-1

    Update to 4.8.0~rc3-1

  • xen Ubuntu:14.04:LTS

    Versions
    • 4.3.0-1ubuntu1
    • 4.3.0-1ubuntu2
    • 4.3.0-1ubuntu3
    • 4.3.0-1ubuntu4
    • 4.3.0-1ubuntu5
    • 4.4.0-0ubuntu3
    • 4.4.0-0ubuntu4
    • 4.4.0-0ubuntu5
    • 4.4.0-0ubuntu5.1
    • 4.4.0-0ubuntu5.2
    • 4.4.1-0ubuntu0.14.04.1
    • 4.4.1-0ubuntu0.14.04.2
    • 4.4.1-0ubuntu0.14.04.3
    • 4.4.1-0ubuntu0.14.04.4
    • 4.4.1-0ubuntu0.14.04.5
    • 4.4.1-0ubuntu0.14.04.6
    • 4.4.2-0ubuntu0.14.04.1
    • 4.4.2-0ubuntu0.14.04.2
    • 4.4.2-0ubuntu0.14.04.3
    • 4.4.2-0ubuntu0.14.04.4
    • 4.4.2-0ubuntu0.14.04.5
    • 4.4.2-0ubuntu0.14.04.6
    Affected ranges
    • ECOSYSTEM: < 4.4.2-0ubuntu0.14.04.7

    Update to 4.4.2-0ubuntu0.14.04.7

  • xen Ubuntu:16.04:LTS

    Versions
    • 4.5.1-0ubuntu1
    • 4.5.1-0ubuntu2
    • 4.6.0-1ubuntu1
    • 4.6.0-1ubuntu2
    • 4.6.0-1ubuntu4
    • 4.6.0-1ubuntu4.1
    Affected ranges
    • ECOSYSTEM: < 4.6.0-1ubuntu4.2

    Update to 4.6.0-1ubuntu4.2

Original sources

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