CVE-2017-17564

Severity: high (CVSS 7.8 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: 2017-12-12 · updated 2026-06-17
Weakness: CWE-388

Description

An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging incorrect error handling for reference counting in shadow mode.

Affected products

xen: through 4.9.1

References

http://www.openwall.com/lists/oss-security/2017/12/12/3
http://www.securityfocus.com/bid/102172
http://www.securitytracker.com/id/1040770
https://lists.debian.org/debian-lts-announce/2018/01/msg00003.html
https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html
https://security.gentoo.org/glsa/201801-14
https://support.citrix.com/article/CTX232096
https://www.debian.org/security/2018/dsa-4112
https://xenbits.xen.org/xsa/advisory-250.html
http://www.openwall.com/lists/oss-security/2017/12/12/3
http://www.securityfocus.com/bid/102172
http://www.securitytracker.com/id/1040770

Get alerted when CVE-2017-17564 or the next vulnerability affects your stack