Xen 3.1 through 4.x, when running 64-bit hosts on Intel CPUs, does not clear the NT flag when using an IRET after a SYSENTER instruction, which allows PV guest users to cause a denial of service (hypervisor crash) by triggering a #GP fault, which is not properly handled by another IRET instruction.
CVSS Details
- CVSS 3.1 Base Score: 3.3
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade xen | Jul 30, 2024 | May 13, 2013 |
| Gentoo Linux | — | Upgrade app-emulation/xen-pvgrub.Upgrade app-emulation/xen.Upgrade app-emulation/xen-tools. | Oct 30, 2017 | May 13, 2013 |
| Suse | — | Upgrade xen-tools-ioemuUpgrade xen-kmp-debugUpgrade sle-sdk-releaseUpgrade xen-kmp-paeUpgrade xen-libs-32bitUpgrade xenUpgrade xen-libsUpgrade xen-kmp-kdumpUpgrade xen-kmp-smpUpgrade xen-kmp-desktopUpgrade xen-doc-pdfUpgrade xen-doc-htmlUpgrade xen-doc-psUpgrade xen-kmp-defaultUpgrade xen-toolsUpgrade xen-kmp-vmipaeUpgrade xen-kmp-kdumppaeUpgrade xen-tools-domUUpgrade xen-develUpgrade xen-kmp-vmiUpgrade xen-kmp-bigsmpUpgrade xen-kmp-trace | Feb 17, 2015 | May 13, 2013 |
| Ubuntu | — | Upgrade xen | Nov 19, 2024 | May 13, 2013 |
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