CVE-2016-9381

7.5 highEPSS 0.3%

Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a "double fetch" vulnerability.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-31)
CWE: CWE-362
Published: 2017-01-23
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

citrix:xenserver
qemu:qemu

References

http://www.securityfocus.com/bid/94476
http://www.securitytracker.com/id/1037344
http://xenbits.xen.org/xsa/advisory-197.html
https://security.gentoo.org/glsa/201612-56
https://support.citrix.com/article/CTX218775

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