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CVE-2016-9907

17
FAUCET Score

CVE-2016-9907 is a memory leakage vulnerability affecting Quick Emulator (Qemu) when built with USB redirector usb-guest support, specifically impacting Debian, Qemu, and Red Hat products. The flaw occurs during the destruction of the USB redirector in 'usbredir_handle_destroy'. A local guest user or process can exploit this with low complexity to leak host memory, leading to a denial-of-service (DoS) condition for the host system. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.7.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:a:redhat:openstack:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:a:redhat:openstack:7.0:*:*:*:*:*:*:*
8CPE matchmatch criteria
cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.0
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
33.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0041 is in the 89th percentile among its peer group of 15,938 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

Patch Available

Vendor Patches (9)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7Fixed in: qemu-kvm-rhev-10:2.9.0-10.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7Fixed in: qemu-kvm-rhev-10:2.9.0-10.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 10.0 (Newton)Fixed in: qemu-kvm-rhev-10:2.9.0-10.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 11.0 (Ocata)Fixed in: qemu-kvm-rhev-10:2.9.0-10.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 8.0 (Liberty)Fixed in: qemu-kvm-rhev-10:2.9.0-10.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 9.0 (Mitaka)Fixed in: qemu-kvm-rhev-10:2.9.0-10.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev-10:2.9.0-14.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)Fixed in: qemu-kvm-rhev

Vendor Advisories (1)

redhatCVE-2016-9907Low

Qemu: usb: redirector: memory leakage when destroying redirector

Nov 7, 2016

References

access.redhat.com / errata/RHSA-2017:2392
Third Party Advisory
access.redhat.com / errata/RHSA-2017:2408
Third Party Advisory
lists.debian.org / debian-lts-announce/2018/09/msg00007.html
Mailing ListThird Party Advisory
security.gentoo.org / glsa/201701-49
Third Party Advisory
openwall.com / lists/oss-security/2016/12/08/3
Mailing ListPatchThird Party Advisory
securityfocus.com / bid/94759
Third Party AdvisoryVDB Entry