CVE-2018-16871

At a glance

Severity: HIGH 7.5
EPSS: EPSS 2.70 % · percentile 86 (2026-10-28)
State: PUBLISHED
Published: 2019-07-30
Updated: 2024-08-05
Assigner: redhat
NVD status: Modified

Description

A flaw was found in the Linux kernel's NFS implementation, all versions 3.x and all versions 4.x up to 4.20. An attacker, who is able to mount an exported NFS filesystem, is able to trigger a null pointer dereference by using an invalid NFS sequence. This can panic the machine and deny access to the NFS server. Any outstanding disk writes to the NFS server will be lost.

Scores

Version	Score	Vector	Scored by
CVSS 3.0	HIGH 7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	redhat
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD · nvd@nist.gov (Primary)
CVSS 3.0	HIGH 7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD · secalert@redhat.com (Secondary)
CVSS 2.0	MEDIUM 5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-476

European references

ENISA EUVD · EUVD-2018-8662
GCVE · GCVE-0-2018-16871

CERT-FR advisories

CERTFR-2020-AVI-243 — Multiples vulnérabilités dans le noyau Linux de Red Hat · cert.ssi.gouv.fr
CERTFR-2020-AVI-147 — Multiples vulnérabilités dans le noyau Linux de Red Hat · cert.ssi.gouv.fr
CERTFR-2019-AVI-632 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
CERTFR-2019-AVI-622 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
CERTFR-2019-AVI-458 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
CERTFR-2019-AVI-440 — Multiples vulnérabilités dans le noyau Linux de Red Hat · cert.ssi.gouv.fr
CERTFR-2019-AVI-376 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
CERTFR-2019-AVI-361 — Multiples vulnérabilités dans le noyau Linux de Red Hat · cert.ssi.gouv.fr
CERTFR-2019-AVI-337 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
CERTFR-2019-AVI-330 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
CERTFR-2019-AVI-306 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 3.0 ≤ 4.20
cpe:2.3:a:redhat:developer_tools:1.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:mrg_realtime:2.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:7.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*

Affected products

Product	Versions
Red Hat · kernel:	affected all 3.x, all 4.x up to 4.20

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD