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CVE-2016-3159

CVE-2016-3159

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

The fpu_fxrstor function in arch/x86/i387.c in Xen 4.x does not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allows local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-2076.

CVSS 3.8 · Low · EPSS 0.4% · 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
    Affected ranges
    • ECOSYSTEM: < 4.4.2-0ubuntu0.14.04.6

    Update to 4.4.2-0ubuntu0.14.04.6

  • 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
    Affected ranges
    • ECOSYSTEM: < 4.6.0-1ubuntu4.1

    Update to 4.6.0-1ubuntu4.1

Original sources

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