What is CVE-2017-8309?

CVE-2017-8309 is a high-severity vulnerability in Qemu, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2017-05-23.

How severe is CVE-2017-8309?

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

Vulnerability in Qemu

CVE-2017-8309

Memory leak in the audio/audio.c in QEMU (aka Quick Emulator) allows remote attackers to cause a denial of service (memory consumption) by repeatedly starting and stopping audio capture.

Published 2017-05-23 · 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: 0.045 (91.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.045 · newest: 0.045 · change: 0.000

Affected products

Qemu
Debian Linux — versions 8.0
Red Hat OpenStack — versions 6.0, 7.0, 8

Weakness classification (CWE)

CWE-772 — Missing Release of Resource after Effective Lifetime

References

lists.debian.org/debian-lts-announce/2018/09/msg00007.html (mailing-list, Mailing List, Third Party Advisory)
security.gentoo.org/glsa/201706-03 (vendor-advisory, Third Party Advisory)
www.securityfocus.com/bid/98302 (VDB Entry, Third Party Advisory, vdb-entry)
access.redhat.com/errata/RHSA-2017:2408 (vendor-advisory, Third Party Advisory)
lists.gnu.org/archive/html/qemu-devel/2017-04/msg05587.html (mailing-list, Patch, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2017-8309?: CVE-2017-8309 is a high-severity vulnerability in Qemu, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2017-05-23.
How severe is CVE-2017-8309?: High severity. CVSS v3 base score is 7.5 out of 10.