What is CVE-2018-15469?

CVE-2018-15469 is a medium-severity vulnerability in Xen, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2018-08-17.

How severe is CVE-2018-15469?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Xen

CVE-2018-15469

An issue was discovered in Xen through 4.11.x. ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they will simply not be properly set up, resulting in subsequent grant-related hypercalls hitting BUG() checks. An unprivileged guest can cause a BUG() check in the hypervisor, resulting in a denial-of-service (crash).

Vulnerability class: DoS (Denial of Service)

Published 2018-08-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (33.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Xen
Debian Linux — versions 8.0

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

security.gentoo.org/glsa/201810-06 (vendor-advisory, Third Party Advisory)
lists.debian.org/debian-lts-announce/2018/11/msg00013.html (mailing-list, Third Party Advisory)
xenbits.xen.org/xsa/advisory-268.html (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2018-15469?: CVE-2018-15469 is a medium-severity vulnerability in Xen, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2018-08-17.
How severe is CVE-2018-15469?: Medium severity. CVSS v3 base score is 6.5 out of 10.