What’s Vulnerable › Vulnerabilities

CVE-2017-10917

• Severity: critical (CVSS 9.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-07-05 · updated 2026-06-17
• Weakness: CWE-476

Description

Xen through 4.8.x does not validate the port numbers of polled event channel ports, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) or possibly obtain sensitive information, aka XSA-221.

Affected products

• xen: through 4.8.1

References

• http://www.debian.org/security/2017/dsa-3969
• http://www.securityfocus.com/bid/99157
• http://www.securitytracker.com/id/1038731
• https://security.gentoo.org/glsa/201708-03
• https://xenbits.xen.org/xsa/advisory-221.html
• http://www.debian.org/security/2017/dsa-3969
• http://www.securityfocus.com/bid/99157
• http://www.securitytracker.com/id/1038731
• https://security.gentoo.org/glsa/201708-03
• https://xenbits.xen.org/xsa/advisory-221.html

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