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The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local PV guests to obtain sensitive information, cause a denial of service, gain privileges, or have unspecified other impact via a crafted page identifier (MFN) to the (1) MMUEXT_MARK_SUPER or (2) MMUEXT_UNMARK_SUPER sub-op in the HYPERVISOR_mmuext_op hypercall or (3) unknown vectors related to page table updates.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade linux-grsecUpgrade linux-vanilla.Upgrade qemuUpgrade xen | Aug 30, 2017 | Dec 17, 2015 |
| Debian | — | Upgrade xen | Mar 22, 2016 | Jan 22, 2016 |
| Freebsd | — | Upgrade xen-kernel | Dec 10, 2025 | Feb 28, 2016 |
| Suse | — | Upgrade xen-kmp-traceUpgrade xen-tools-domUUpgrade xen-tools-xendomains-wait-diskUpgrade xen-doc-htmlUpgrade xen-kmp-paeUpgrade xen-develUpgrade xen-doc-pdfUpgrade xen-libsUpgrade xen-libs-32bitUpgrade xenUpgrade xen-toolsUpgrade xen-kmp-default | Mar 28, 2016 | Jan 22, 2016 |
| Ubuntu | — | Upgrade xen | Nov 19, 2024 | Jan 22, 2016 |
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