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 | alpine-linux-upgrade-xen | Sep 20, 2017 | Oct 7, 2016 | |
| Debian | debian-upgrade-xen | Dec 9, 2016 | Oct 7, 2016 | |
| Freebsd | freebsd-upgrade-package-xen-kernel | Dec 4, 2016 | Dec 4, 2016 | |
| Gentoo Linux | gentoo-linux-upgrade-app-emulation-xengentoo-linux-upgrade-app-emulation-xen-tools | Oct 30, 2017 | Oct 7, 2016 | |
| Redhat_linux | no-fix-redhat-rpm-package | Jul 9, 2025 | Oct 4, 2016 | |
| Suse | — | suse-upgrade-xensuse-upgrade-xen-develsuse-upgrade-xen-doc-htmlsuse-upgrade-xen-doc-pdfsuse-upgrade-xen-kmp-defaultsuse-upgrade-xen-kmp-paesuse-upgrade-xen-kmp-tracesuse-upgrade-xen-libssuse-upgrade-xen-libs-32bitsuse-upgrade-xen-toolssuse-upgrade-xen-tools-domususe-upgrade-xen-tools-xendomains-wait-disk | Dec 9, 2016 | Oct 7, 2016 |
| Ubuntu | ubuntu-upgrade-xen | Nov 19, 2024 | Oct 7, 2016 |
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