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CVE-2011-3131

17
FAUCET Score

CVE-2011-3131 describes a denial-of-service vulnerability in Xen 4.1.1 and earlier. A malicious local guest operating system kernel, controlling a PCI[E] device, can flood the IOMMU with crafted DMA requests, leading to a livelock, high CPU consumption, and a host system hang. This vulnerability has a CVSS score of 4.6, indicating a low attack complexity and requiring authenticated access, but resulting in complete availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.1.1CPE matchmatch criteria
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.6MEDIUM

AV:L/AC:L/Au:S/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
3.1
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.44%
Probability of exploitation in next 30 days
EPSS Percentile
36.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 90th percentile among its peer group of 15,938 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

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-274.7.1.el5
View patch

Vendor Advisories (1)

redhatCVE-2011-3131Moderate

kernel: xen: IOMMU fault livelock

Aug 12, 2011

References

old-list-archives.xen.org / archives/html/xen-devel/2011-06/msg01106.html
old-list-archives.xen.org / archives/html/xen-devel/2011-08/msg00450.html
secunia.com / advisories/45622
Vendor Advisory
secunia.com / advisories/51468
Vendor Advisory
debian.org / security/2012/dsa-2582
securityfocus.com / bid/49146
xenbits.xen.org / hg/staging/xen-4.1-testing.hg/rev/84e3706df07a
Exploit