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CVE-2015-7814

19
FAUCET Score

CVE-2015-7814 describes a race condition in the Xen hypervisor, specifically affecting versions 4.6.x and earlier, within the relinquish_memory function. This flaw allows a local, partially privileged domain to trigger a denial of service, leading to a host crash. The vulnerability has a CVSS score of 4.7, indicating a low-severity local attack with medium complexity, resulting in a complete availability impact. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), it has received minimal community discussion and media coverage, suggesting limited public awareness or interest.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.6.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.7MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.28%
Probability of exploitation in next 30 days
EPSS Percentile
20.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0028 is in the 10th percentile among its peer group of 1,595 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

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2015-7814Important

xen: Race between domain destruction and memory allocation decrease on ARM

Oct 29, 2015

References

lists.fedoraproject.org / pipermail/package-announce/2015-November/171082.html
lists.fedoraproject.org / pipermail/package-announce/2015-November/171185.html
lists.fedoraproject.org / pipermail/package-announce/2015-November/171249.html
security.gentoo.org / glsa/201604-03
debian.org / security/2015/dsa-3414
securitytracker.com / id/1034030
xenbits.xen.org / xsa/advisory-147.html
Vendor Advisory