Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2018-20855

16
FAUCET Score

CVE-2018-20855 is a low-severity vulnerability in the Linux kernel prior to version 4.18.7, specifically affecting the Infiniband driver for Mellanox hardware. It allows a local attacker to leak uninitialized stack memory to userspace due to an uninitialized variable in the create_qp_common function. The CVSS score is 3.3 (Low), indicating a local attack vector with low complexity and a low impact on confidentiality, with no impact on integrity or availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.18.7CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
15.0CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
15.1CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:active_iq_performance_analytics_services:-:*:*:*:*:*:*:*
>= 9.5CPE matchmatch criteria
cpe:2.3:a:netapp:active_iq_unified_manager:*:*:*:*:*:vmware_vsphere:*:*

CVSS Data

CVSS version used by this source: 3.1

3.3LOW

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 93rd percentile among its peer group of 1,511 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-alt

Vendor Advisories (1)

redhatCVE-2018-20855Moderate

kernel: Information leak in create_qp_common in drivers/infiniband/hw/mlx5/qp.c

Jul 26, 2019

References

lists.opensuse.org / opensuse-security-announce/2019-08/msg00055.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2019-08/msg00056.html
Third Party Advisory
cdn.kernel.org / pub/linux/kernel/v4.x/ChangeLog-4.18.7
Mailing ListRelease NotesVendor Advisory
github.com / torvalds/linux/commit/0625b4ba1a5d4703c7fb01c497bd6c156908af00
PatchThird Party Advisory
git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
Mailing ListPatchVendor Advisory
security.netapp.com / advisory/ntap-20190905-0002
Third Party Advisory