What is CVE-2018-20216?

CVE-2018-20216 is a high-severity vulnerability in Qemu, classified under CWE-252. CVSS score: 7.5/10. Published 2018-12-20.

How severe is CVE-2018-20216?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Qemu

CVE-2018-20216

QEMU can have an infinite loop in hw/rdma/vmw/pvrdma_dev_ring.c because return values are not checked (and -1 is mishandled).

Published 2018-12-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.039 (89.9th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.039 · newest: 0.039 · change: 0.000

Affected products

Qemu
Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04

Weakness classification (CWE)

References

www.openwall.com/lists/oss-security/2018/12/19/2 (mailing-list, Patch, Mailing List, Third Party Advisory)
lists.gnu.org/archive/html/qemu-devel/2018-12/msg03052.html (mailing-list, Patch, Third Party Advisory)
www.securityfocus.com/bid/106291 (VDB Entry, Third Party Advisory, vdb-entry)
usn.ubuntu.com/3923-1/ (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2018-20216?: CVE-2018-20216 is a high-severity vulnerability in Qemu, classified under CWE-252. CVSS score: 7.5/10. Published 2018-12-20.
How severe is CVE-2018-20216?: High severity. CVSS v3 base score is 7.5 out of 10.