An issue was discovered in Xen through 4.11.x on Intel x86 platforms allowing guest OS users to cause a denial of service (host OS hang) because Xen does not work around Intel's mishandling of certain HLE transactions associated with the KACQUIRE instruction prefix.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade xen | Feb 15, 2019 | Dec 8, 2018 |
| Debian | — | Upgrade xen | Jan 16, 2019 | Dec 7, 2018 |
| Suse | — | Upgrade xen-toolsUpgrade xenUpgrade xen-libs-32bitUpgrade xen-tools-xendomains-wait-diskUpgrade xen-develUpgrade xen-tools-domUUpgrade xen-doc-htmlUpgrade xen-libsUpgrade xen-kmp-paeUpgrade xen-kmp-default | Jan 4, 2019 | Dec 7, 2018 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | Dec 8, 2018 |
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