The x86 emulator in Xen 3.2.x through 4.5.x does not properly ignore segment overrides for instructions with register operands, which allows local guest users to obtain sensitive information, cause a denial of service (memory corruption), or possibly execute arbitrary code via unspecified vectors.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | Upgrade kernel-xen-develUpgrade kernel-debug-develUpgrade kernel-xenUpgrade kernel-docUpgrade kernel-PAEUpgrade kernel-debugUpgrade kernel-PAE-develUpgrade kernel-headersUpgrade kernelUpgrade kernel-devel | Jul 6, 2016 | Mar 12, 2015 |
| Debian | — | Upgrade xen | Jul 30, 2024 | Mar 12, 2015 |
| Freebsd | — | Upgrade xen-kernel | Dec 10, 2025 | Jul 11, 2015 |
| Gentoo Linux | — | Upgrade app-emulation/xen.Upgrade app-emulation/xen-pvgrub.Upgrade app-emulation/xen-tools.Upgrade app-emulation/pvgrub. | Oct 30, 2017 | Mar 12, 2015 |
| Oracle_linux | — | Upgrade kernel | Mar 22, 2016 | Mar 12, 2015 |
| Suse | — | Upgrade xen-doc-htmlUpgrade xenUpgrade xen-tools-domUUpgrade xen-develUpgrade xen-kmp-traceUpgrade xen-kmp-defaultUpgrade xen-toolsUpgrade xen-libsUpgrade xen-libs-32bitUpgrade xen-kmp-paeUpgrade xen-doc-pdf | Dec 18, 2015 | Mar 12, 2015 |
| Ubuntu | — | Upgrade xen | Nov 19, 2024 | Mar 12, 2015 |
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