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CVE-2018-15471

26
FAUCET Score

CVE-2018-15471 is an out-of-bounds access vulnerability in the Linux kernel's xen-netback driver, affecting Linux kernels through 4.18.1 and Xen through 4.11.x. This flaw allows a malicious or buggy Xen frontend to manipulate request queue mappings, leading to memory access outside of allocated buffers. Rated High severity (CVSS 7.8), successful exploitation could result in privilege escalation, Denial of Service, or information leaks. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.11.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
>= 4.7, < 4.9.133CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.10, < 4.14.76CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.15, < 4.18.14CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 66th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2018-15471Important

kernel: net: xen: Linux netback driver OOB access in hash handling (XSA-270)

Aug 14, 2018

References

bugs.chromium.org / p/project-zero/issues/detail
Third Party Advisory
lists.debian.org / debian-lts-announce/2019/03/msg00017.html
Mailing ListThird Party Advisory
usn.ubuntu.com / 3819-1
Third Party Advisory
usn.ubuntu.com / 3820-1
Third Party Advisory
usn.ubuntu.com / 3820-2
Third Party Advisory
usn.ubuntu.com / 3820-3
Third Party Advisory
debian.org / security/2018/dsa-4313
Third Party Advisory
xenbits.xen.org / xsa/advisory-270.html
Vendor Advisory