CVE-2017-10917

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.

• CWE-476

• 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.htmlMailing List, Mitigation, Third Party Advisory
• 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.htmlMailing List, Mitigation, Third Party Advisory

Published

Jul 5, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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