What’s Vulnerable › Vulnerabilities

CVE-2016-9385

• Severity: medium (CVSS 6.0 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: 2017-01-23 · updated 2026-06-17
• Weakness: CWE-20

Description

The x86 segment base write emulation functionality in Xen 4.4.x through 4.7.x allows local x86 PV guest OS administrators to cause a denial of service (host crash) by leveraging lack of canonical address checks.

Affected products

• Citrix XenServer: 6.0.2, 6.2.0, 6.5, 7.0
• xen: 4.4.0, 4.4.1, 4.4.2, 4.4.3, 4.4.4, 4.5.0 (+10)

References

• http://www.securityfocus.com/bid/94472
• http://www.securitytracker.com/id/1037342
• http://xenbits.xen.org/xsa/advisory-193.html
• https://security.gentoo.org/glsa/201612-56
• https://support.citrix.com/article/CTX218775
• http://www.securityfocus.com/bid/94472
• http://www.securitytracker.com/id/1037342
• http://xenbits.xen.org/xsa/advisory-193.html
• https://security.gentoo.org/glsa/201612-56
• https://support.citrix.com/article/CTX218775

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