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Ubuntu: (CVE-2016-3158): xen vulnerability

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Ubuntu: (CVE-2016-3158): xen vulnerability

Severity
2
CVSS
(AV:L/AC:L/Au:S/C:P/I:N/A:N)
Published
04/13/2016
Created
11/21/2024
Added
11/19/2024
Modified
11/27/2024

Description

The xrstor function in arch/x86/xstate.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.

Solution(s)

  • ubuntu-upgrade-xen

References

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