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CVE-2016-8668

16
FAUCET Score

CVE-2016-8668 is an out-of-bounds read vulnerability in the rocker_io_writel function of QEMU, affecting products like openSUSE and QEMU itself. This flaw allows a highly privileged local guest OS administrator to trigger a denial of service (QEMU process crash) by manipulating DMA buffer sizes. With a CVSS score of 6.0 (MEDIUM), it requires high privileges and local access but has a high impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion, suggesting a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.7.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
42.2CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:*

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
32.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 81st percentile among its peer group of 3,720 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 Advisories (1)

redhatCVE-2016-8668Low

Qemu: net: OOB buffer access in rocker switch emulation

Oct 12, 2016

References

lists.opensuse.org / opensuse-updates/2016-12/msg00140.html
Mailing ListThird Party Advisory
lists.gnu.org / archive/html/qemu-devel/2016-10/msg02501.html
PatchThird Party Advisory
security.gentoo.org / glsa/201611-11
Third Party Advisory
openwall.com / lists/oss-security/2016/10/14/8
Mailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2016/10/15/9
Mailing ListThird Party Advisory
securityfocus.com / bid/93566
Third Party AdvisoryVDB Entry