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CVE-2015-8558

16
FAUCET Score

CVE-2015-8558 describes a denial-of-service vulnerability in QEMU's ehci_process_itd function, affecting Debian and QEMU products. A local guest OS administrator can trigger an infinite loop and high CPU consumption by crafting a circular isochronous transfer descriptor list. Rated Medium (CVSS 5.5), this vulnerability requires local access and low attack complexity, leading to high availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.5.1.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.48%
Probability of exploitation in next 30 days
EPSS Percentile
38.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0048 is in the 92nd percentile among its peer group of 15,940 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (7)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: qemu-kvm
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6 (Juno)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty)Fixed in: qemu-kvm-rhev

Vendor Advisories (1)

redhatCVE-2015-8558Low

Qemu: usb: infinite loop in ehci_advance_state results in DoS

Dec 10, 2015

References

git.qemu.org
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
lists.gnu.org / archive/html/qemu-devel/2015-12/msg02124.html
Mailing ListPatchThird Party Advisory
security.gentoo.org / glsa/201602-01
Third Party Advisory
debian.org / security/2016/dsa-3469
Third Party Advisory
debian.org / security/2016/dsa-3470
Third Party Advisory
debian.org / security/2016/dsa-3471
Third Party Advisory
openwall.com / lists/oss-security/2015/12/14/16
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2015/12/14/9
Mailing ListThird Party Advisory
securityfocus.com / bid/80694
Third Party AdvisoryVDB Entry