What’s Vulnerable › Vulnerabilities

CVE-2016-9932

• Severity: low (CVSS 3.3 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-01-26 · updated 2026-06-17
• Weakness: CWE-200

Description

CMPXCHG8B emulation in Xen 3.3.x through 4.7.x on x86 systems allows local HVM guest OS users to obtain sensitive information from host stack memory via a "supposedly-ignored" operand size prefix.

Affected products

• xen: 3.3.0, 3.3.1, 3.3.2, 3.4.0, 3.4.1, 3.4.2 (+39)

References

• http://www.debian.org/security/2017/dsa-3847
• http://www.securityfocus.com/bid/94863
• http://www.securitytracker.com/id/1037468
• http://xenbits.xen.org/xsa/advisory-200.html
• https://security.gentoo.org/glsa/201612-56
• https://support.citrix.com/article/CTX219378
• http://www.debian.org/security/2017/dsa-3847
• http://www.securityfocus.com/bid/94863
• http://www.securitytracker.com/id/1037468
• http://xenbits.xen.org/xsa/advisory-200.html
• https://security.gentoo.org/glsa/201612-56
• https://support.citrix.com/article/CTX219378

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