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CVE-2016-7909

19
FAUCET Score

CVE-2016-7909 describes a denial-of-service vulnerability in QEMU's pcnet_rdra_addr function, affecting Debian and QEMU installations. A local guest OS administrator can trigger an infinite loop and crash the QEMU process by setting the receive or transmit descriptor ring length to zero. This vulnerability has a CVSS v3.1 score of 4.4 (Medium), indicating a low attack complexity and requiring high privileges, with the primary impact being availability. 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
<= 2.7.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.4MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
0.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 84th percentile among its peer group of 3,720 CVEs.

Social Chatter

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 (2)

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

Vendor Advisories (1)

redhatCVE-2016-7909Low

Qemu: net: pcnet: infinite loop in pcnet_rdra_addr()

Sep 30, 2016

References

lists.opensuse.org / opensuse-updates/2016-12/msg00140.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2018/11/msg00038.html
Third Party Advisory
lists.gnu.org / archive/html/qemu-devel/2016-09/msg07942.html
Mailing ListPatchVendor Advisory
security.gentoo.org / glsa/201611-11
Third Party Advisory
openwall.com / lists/oss-security/2016/10/03/3
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/10/03/6
Mailing ListThird Party Advisory
securityfocus.com / bid/93275
Third Party AdvisoryVDB Entry