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.
CVSS Details
- CVSS 3.1 Base Score: 8.6
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade linux-grsecUpgrade linux-vanilla.Upgrade xenUpgrade qemu | Aug 30, 2017 | Dec 17, 2015 |
| Debian | — | Upgrade xen | Mar 22, 2016 | Mar 17, 2016 |
| Freebsd | — | Upgrade xen-kernel | Dec 10, 2025 | Jan 6, 2016 |
| Gentoo Linux | — | Upgrade app-emulation/xen-pvgrub.Upgrade app-emulation/xen-tools.Upgrade app-emulation/xen.Upgrade app-emulation/pvgrub. | Oct 30, 2017 | Apr 13, 2016 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Dec 17, 2015 |
| Suse | — | Upgrade xenUpgrade xen-kmp-defaultUpgrade xen-kmp-traceUpgrade xen-libs-32bitUpgrade xen-kmp-paeUpgrade xen-toolsUpgrade xen-develUpgrade xen-doc-pdfUpgrade xen-libsUpgrade xen-tools-domuUpgrade xen-tools-xendomains-wait-diskUpgrade xen-doc-html | Mar 17, 2016 | Mar 4, 2016 |
| Ubuntu | — | Upgrade xen | Nov 19, 2024 | Apr 13, 2016 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub