vulnerability
Debian: CVE-2016-3158: xen -- security update
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:L/Au:S/C:P/I:N/A:N) | Apr 13, 2016 | Apr 22, 2016 | Mar 30, 2026 |
Severity
2
CVSS
(AV:L/AC:L/Au:S/C:P/I:N/A:N)
Published
Apr 13, 2016
Added
Apr 22, 2016
Modified
Mar 30, 2026
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
debian-upgrade-xen
Rapid7 Labs
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