The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | Upgrade kernel-xen-develUpgrade kernel-PAEUpgrade kernel-debugUpgrade kernel-debug-develUpgrade kernel-develUpgrade kernel-PAE-develUpgrade kernel-xenUpgrade kernel-headersUpgrade kernel-docUpgrade kernel | Dec 1, 2016 | Oct 17, 2013 |
| Debian | — | Upgrade xen | Jul 30, 2024 | Oct 17, 2013 |
| Gentoo Linux | — | Upgrade app-emulations/xen.Upgrade app-emulations/xen-pvgrub.Upgrade app-emulations/xen-tools. | Oct 30, 2017 | Oct 17, 2013 |
| Oracle_linux | — | Upgrade kernel | Oct 16, 2024 | Oct 17, 2013 |
| Suse | — | Upgrade xen-tools-domUUpgrade xen-kmp-kdumpUpgrade xen-kmp-defaultUpgrade xen-kmp-traceUpgrade sle-sdk-releaseUpgrade xen-kmp-paeUpgrade xen-libsUpgrade xen-doc-htmlUpgrade xen-doc-pdfUpgrade xen-kmp-bigsmpUpgrade xen-tools-ioemuUpgrade xen-kmp-vmiUpgrade xen-kmp-smpUpgrade xen-develUpgrade xen-doc-psUpgrade xenUpgrade xen-kmp-vmipaeUpgrade xen-libs-32bitUpgrade xen-kmp-debugUpgrade xen-kmp-kdumppaeUpgrade xen-kmp-desktopUpgrade xen-tools | Dec 12, 2013 | Oct 17, 2013 |
| Ubuntu | — | Upgrade xen | Nov 19, 2024 | Oct 17, 2013 |
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