Xen 4.6.x, 4.5.x, 4.4.x, 4.3.x, and earlier do not initialize x86 FPU stack and XMM registers when XSAVE/XRSTOR are not used to manage guest extended register state, which allows local guest domains to obtain sensitive information from other domains via unspecified vectors.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-479-1 xen security update
Debian DSA Debian DSA DSA-3519-1 xen security update
EUVD EUVD EUVD-2015-8435 Xen 4.6.x, 4.5.x, 4.4.x, 4.3.x, and earlier do not initialize x86 FPU stack and XMM registers when XSAVE/XRSTOR are not used to manage guest extended register state, which allows local guest domains to obtain sensitive information from other domains via unspecified vectors.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-06T08:20:43.162Z

Reserved: 2015-12-14T00:00:00

Link: CVE-2015-8555

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2016-04-13T15:59:08.290

Modified: 2025-04-12T10:46:40.837

Link: CVE-2015-8555

cve-icon Redhat

Severity : Low

Publid Date: 2015-12-17T00:00:00Z

Links: CVE-2015-8555 - Bugzilla

cve-icon OpenCVE Enrichment

No data.