The vCPU context-switch implementation in Xen through 4.8.x improperly interacts with the Memory Protection Extensions (MPX) and Protection Key (PKU) features, which makes it easier for guest OS users to defeat ASLR and other protection mechanisms, aka XSA-220.
CVSS Details
- CVSS 3.0 Base Score: 7.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade xen | Oct 27, 2017 | Jul 5, 2017 |
| Debian | — | Upgrade xen | Sep 13, 2017 | Jul 4, 2017 |
| Suse | — | Upgrade xen-toolsUpgrade xen-libs-32bitUpgrade xenUpgrade xen-tools-domUUpgrade xen-libsUpgrade xen-doc-htmlUpgrade xen-kmp-default | Jul 7, 2017 | Jul 4, 2017 |
| Ubuntu | — | Upgrade xen | Nov 19, 2024 | Jul 5, 2017 |
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