VYPR
← All advisories
Unrated severityNVD Advisory· Published Aug 28, 2013· Updated Jun 16, 2026

CVE-2013-2076

CVE-2013-2076

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

15
  • Xen/Xen15 versions
    cpe:2.3:o:xen:xen:4.0.0:*:*:*:*:*:*:*+ 14 more
    • cpe:2.3:o:xen:xen:4.0.0:*:*:*:*:*:*:*
    • cpe:2.3:o:xen:xen:4.0.1:*:*:*:*:*:*:*
    • cpe:2.3:o:xen:xen:4.0.2:*:*:*:*:*:*:*
    • cpe:2.3:o:xen:xen:4.0.3:*:*:*:*:*:*:*
    • cpe:2.3:o:xen:xen:4.0.4:*:*:*:*:*:*:*
    • cpe:2.3:o:xen:xen:4.1.0:*:*:*:*:*:*:*
    • cpe:2.3:o:xen:xen:4.1.1:*:*:*:*:*:*:*
    • cpe:2.3:o:xen:xen:4.1.2:*:*:*:*:*:*:*
    • cpe:2.3:o:xen:xen:4.1.3:*:*:*:*:*:*:*
    • cpe:2.3:o:xen:xen:4.1.4:*:*:*:*:*:*:*
    • cpe:2.3:o:xen:xen:4.1.5:*:*:*:*:*:*:*
    • cpe:2.3:o:xen:xen:4.2.0:*:*:*:*:*:*:*
    • cpe:2.3:o:xen:xen:4.2.1:*:*:*:*:*:*:*
    • cpe:2.3:o:xen:xen:4.2.2:*:*:*:*:*:*:*
    • (no CPE)range: 4.0.x, 4.1.x, 4.2.x

Patches

Vulnerability mechanics

References

5

News mentions

0

No linked articles in our index yet.