What is CVE-2017-15268?

CVE-2017-15268 is a high-severity vulnerability in Qemu, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2017-10-12.

How severe is CVE-2017-15268?

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

Vulnerability in Qemu

CVE-2017-15268

Qemu through 2.10.0 allows remote attackers to cause a memory leak by triggering slow data-channel read operations, related to io/channel-websock.c.

Published 2017-10-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.043 (90.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.043 · newest: 0.043 · change: 0.000

Affected products

Qemu

Weakness classification (CWE)

CWE-772 — Missing Release of Resource after Effective Lifetime

References

www.debian.org/security/2018/dsa-4213 (vendor-advisory)
access.redhat.com/errata/RHSA-2018:0816 (vendor-advisory)
www.securityfocus.com/bid/101277 (VDB Entry, Third Party Advisory, vdb-entry)
access.redhat.com/errata/RHSA-2018:1104 (vendor-advisory)
bugs.launchpad.net/qemu/+bug/1718964 (Exploit, Patch, Third Party Advisory, Issue Tracking)
usn.ubuntu.com/3575-1/ (vendor-advisory)
lists.gnu.org/archive/html/qemu-devel/2017-10/msg02278.html (mailing-list, Patch, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2017-15268?: CVE-2017-15268 is a high-severity vulnerability in Qemu, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2017-10-12.
How severe is CVE-2017-15268?: High severity. CVSS v3 base score is 7.5 out of 10.