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CVE-2016-4964

21
FAUCET Score

CVE-2016-4964 describes a denial-of-service vulnerability in QEMU's mptsas_fetch_requests function, specifically affecting the hw/scsi/mptsas.c component. A local guest OS administrator can trigger an infinite loop, leading to high CPU consumption or a QEMU process crash. Rated 6.0 MEDIUM, this vulnerability requires high privileges (PR:H) and has a high impact on availability (A:H), but no impact on confidentiality or integrity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.2CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.0MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.5
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 81st 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 (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev

Vendor Advisories (1)

redhatCVE-2016-4964Low

Qemu: scsi: mptsas infinite loop in mptsas_fetch_requests

May 24, 2016

References

git.qemu.org
lists.gnu.org / archive/html/qemu-devel/2016-05/msg04027.html
PatchThird Party Advisory
security.gentoo.org / glsa/201609-01
Third Party Advisory
openwall.com / lists/oss-security/2016/05/24/4
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/05/24/7
Mailing ListThird Party Advisory