What is CVE-2016-1568?

CVE-2016-1568 is a high-severity vulnerability in Qemu, classified under Use After Free. CVSS score: 8.8/10. Published 2016-04-12.

How severe is CVE-2016-1568?

High severity. CVSS v3 base score is 8.8 out of 10.

Use After Free in Qemu

CVE-2016-1568

Use-after-free vulnerability in hw/ide/ahci.c in QEMU, when built with IDE AHCI Emulation support, allows guest OS users to cause a denial of service (instance crash) or possibly execute arbitrary code via an invalid AHCI Native Command Queuing (NCQ) AIO command.

Vulnerability class: Use-After-Free

Published 2016-04-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (42.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Qemu
Debian Linux — versions 7.0, 8.0
Red Hat Enterprise Linux — versions 7.0
Red Hat OpenStack — versions 6.0, 7.0, 5.0
Red Hat Virtualization — versions 3.0

Weakness classification (CWE)

CWE-416 — Use After Free

References

rhn.redhat.com/errata/RHSA-2016-0086.html (vendor-advisory, Third Party Advisory)
www.openwall.com/lists/oss-security/2016/01/09/2 (mailing-list, Mailing List, Third Party Advisory)
www.securityfocus.com/bid/80191 (VDB Entry, Third Party Advisory, vdb-entry)
git.qemu.org/
www.securitytracker.com/id/1034859 (VDB Entry, Third Party Advisory, vdb-entry)
www.debian.org/security/2016/dsa-3469 (vendor-advisory, Third Party Advisory)
www.debian.org/security/2016/dsa-3470 (vendor-advisory, Third Party Advisory)
rhn.redhat.com/errata/RHSA-2016-0087.html (vendor-advisory, Third Party Advisory)
rhn.redhat.com/errata/RHSA-2016-0084.html (vendor-advisory, Third Party Advisory)
www.debian.org/security/2016/dsa-3471 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2016-1568?: CVE-2016-1568 is a high-severity vulnerability in Qemu, classified under Use After Free. CVSS score: 8.8/10. Published 2016-04-12.
How severe is CVE-2016-1568?: High severity. CVSS v3 base score is 8.8 out of 10.