CVE-2018-20855

Name: CVE-2018-20855
Creator: NVD / NIST
Published: 2019-07-26T05:15:10.423+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.3/10EPSS 0.46%

Last modified Jun 17, 2026

CVE-2018-20855 is a low-severity vulnerability rated 3.3/10 on the CVSS scale. An issue was discovered in the Linux kernel before 4.18.7. In create_qp_common in drivers/infiniband/hw/mlx5/qp.c, mlx5_ib_create_qp_resp was never initialized, resulting in a leak of stack memory to userspace.. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

Description

An issue was discovered in the Linux kernel before 4.18.7. In create_qp_common in drivers/infiniband/hw/mlx5/qp.c, mlx5_ib_create_qp_resp was never initialized, resulting in a leak of stack memory to userspace.

Metrics

CVSS 3.1

3.3/10

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

EPSS Probability

0.46%

36.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 4.18.7
Opensuse	Leap	15.0
Opensuse	Leap	15.1
Netapp	Active Iq Performance Analytics Services	All versions
Netapp	Active Iq Unified Manager	>= 9.5
Netapp	Data Availability Services	All versions
Netapp	Element Software	All versions

References

http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00055.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00056.htmlThird Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7Mailing List, Release Notes, Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0625b4ba1a5d4703c7fb01c497bd6c156908af00Mailing List, Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/0625b4ba1a5d4703c7fb01c497bd6c156908af00Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20190905-0002/Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00055.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00056.htmlThird Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7Mailing List, Release Notes, Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0625b4ba1a5d4703c7fb01c497bd6c156908af00Mailing List, Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/0625b4ba1a5d4703c7fb01c497bd6c156908af00Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20190905-0002/Third Party Advisory

Timeline

Published: Jul 26, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-20855?

How severe is CVE-2018-20855?

CVE-2018-20855 has a CVSS score of 3.3/10 (LOW severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.

How do I fix CVE-2018-20855?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-20855?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST