CVE-2016-9637

Xen: qemu ioport out-of-bounds array access (XSA-199)

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Severity

Important

Red Hat Product Security

7.6

CVSS 3.0

Review impact separately from score.

Published · December 6, 2016

Updated · May 13, 2026

Description

An out of bounds array access issue was found in the Xen virtual machine monitor, built with the QEMU ioport support. It could occur while doing ioport read/write operations, if guest was to supply a 32bit address parameter. A privileged guest user/process could use this flaw to potentially escalate their privileges on a host.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 7.6
CVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS 2.0 · 6.5
AV:A/AC:H/Au:S/C:C/I:C/A:C

CWE-125 · Out-of-bounds Read