Xen 4.0.x, 4.1.x, and 4.2.x, when running on AMD64 processors, only save/restore the FOP, FIP, and FDP x87 registers in FXSAVE/FXRSTOR when an exception is pending, which allows one domain to determine portions of the state of floating point instructions of other domains, which can be leveraged to obtain sensitive information such as cryptographic keys, a similar vulnerability to CVE-2006-1056. NOTE: this is the documented behavior of AMD64 processors, but it is inconsistent with Intel processors in a security-relevant fashion that was not addressed by the kernels.
CVSS Details
- CVSS 3.1 Base Score: 5.3
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade xen | Aug 30, 2017 | Aug 28, 2013 |
| Debian | — | Upgrade xen | Jul 30, 2024 | Aug 28, 2013 |
| Gentoo Linux | — | Upgrade app-emulation/xen.Upgrade app-emulation/xen-pvgrub.Upgrade app-emulation/xen-tools. | Oct 30, 2017 | Aug 28, 2013 |
| Suse | — | Upgrade xen-develUpgrade xen-kmp-desktopUpgrade xen-kmp-traceUpgrade xen-toolsUpgrade xen-kmp-defaultUpgrade xenUpgrade xen-libs-32bitUpgrade xen-doc-htmlUpgrade xen-doc-pdfUpgrade xen-tools-domUUpgrade xen-kmp-paeUpgrade sle-sdk-releaseUpgrade xen-libs | Feb 17, 2015 | Aug 28, 2013 |
| Ubuntu | — | Upgrade xen | Nov 19, 2024 | Aug 28, 2013 |
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