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FreeBSD: VID-58685E23-BA4D-11E6-AE1B-002590263BF5 (CVE-2016-9381): xen-tools -- qemu incautious about shared ring processing

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FreeBSD: VID-58685E23-BA4D-11E6-AE1B-002590263BF5 (CVE-2016-9381): xen-tools -- qemu incautious about shared ring processing

Severity
7
CVSS
(AV:L/AC:M/Au:N/C:C/I:C/A:C)
Published
11/22/2016
Created
07/25/2018
Added
12/04/2016
Modified
05/07/2019

Description

Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a "double fetch" vulnerability.

Solution(s)

  • freebsd-upgrade-package-xen-tools

References

  • CVE-2016-9381
  • DLA-720-1
  • USN-3261-1

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