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.
CVSS Details
- CVSS 3.1 Base Score: 6.1
- CVSS 3.0 Base Score: 6.3
- CVSS 3.0 Vector: (CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade xen | Sep 20, 2017 | Oct 7, 2016 |
| Debian | — | Upgrade xen | Dec 9, 2016 | Oct 7, 2016 |
| Freebsd | — | Upgrade xen-kernel | Dec 4, 2016 | Dec 4, 2016 |
| Gentoo Linux | — | Upgrade app-emulation/xen-tools.Upgrade app-emulation/xen. | Oct 30, 2017 | Oct 7, 2016 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Oct 4, 2016 |
| Suse | — | Upgrade xen-libs-32bitUpgrade xen-libsUpgrade xen-toolsUpgrade xen-doc-pdfUpgrade xen-kmp-paeUpgrade xen-tools-xendomains-wait-diskUpgrade xen-kmp-traceUpgrade xen-tools-domuUpgrade xen-develUpgrade xen-kmp-defaultUpgrade xenUpgrade xen-doc-html | Dec 9, 2016 | Oct 7, 2016 |
| Ubuntu | — | Upgrade xen | Nov 19, 2024 | Oct 7, 2016 |
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