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Race Condition Affecting xen package, versions <4.7.0-r5

Severity

 Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.07% (33rd percentile)

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  • Snyk ID SNYK-ALPINE320-XEN-7012608
  • published 23 May 2024
  • disclosed 7 Oct 2016
Report a new vulnerability Found a mistake?

Introduced: 7 Oct 2016

CVE-2016-7777 Open this link in a new tab
CWE-362 Open this link in a new tab

How to fix?

Upgrade Alpine:3.20 xen to version 4.7.0-r5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Alpine. See How to fix? for Alpine:3.20 relevant fixed versions and status.

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.