CVE-2018-16871

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.

CVSS breakdown

CVSS 3.0

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected products

Red Hat / kernelall 3.x, all 4.x up to 4.20 – all 3.x, all 4.x up to 4.20

References

MISChttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16871
VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2019:2696
VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2019:2730
MISChttps://support.f5.com/csp/article/K18657134
MISChttps://support.f5.com/csp/article/K18657134?utm_source=f5support&amp%3Butm_medium=RSS
VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2020:0740
MISChttps://security.netapp.com/advisory/ntap-20211004-0002/