Xen 4.0.x through 4.7.x mishandle x86 task switches to VM86 mode, which allows local 32-bit x86 HVM guest OS users to gain privileges or cause a denial of service (guest OS crash) by leveraging a guest operating system that uses hardware task switching and allows a new task to start in VM86 mode.
CVSS Details
- CVSS 3.0 Base Score: 7.8
- CVSS 3.0 Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | alpine-linux-upgrade-xen | Sep 20, 2017 | Jan 23, 2017 | |
| Debian | debian-upgrade-xen | Dec 9, 2016 | Dec 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-pvgrubgentoo-linux-upgrade-app-emulation-xen-tools | Oct 30, 2017 | Jan 23, 2017 | |
| 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 | Dec 7, 2016 |
| Ubuntu | ubuntu-upgrade-xen | Nov 19, 2024 | Jan 23, 2017 |
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