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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.65%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: Red Hat kernel:
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16871 third party advisory issue tracking
https://access.redhat.com/errata/RHSA-2019:2696 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:2730 third party advisory vendor advisory
https://support.f5.com/csp/article/K18657134 third party advisory
https://support.f5.com/csp/article/K18657134?utm_source=f5support&%3Butm_medium=RSS
https://access.redhat.com/errata/RHSA-2020:0740 third party advisory vendor advisory
https://security.netapp.com/advisory/ntap-20211004-0002/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2018-16871?
CVE-2018-16871 has been scored as a high severity vulnerability.
How to fix CVE-2018-16871?
To fix CVE-2018-16871, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-16871 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-16871 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-16871?
CVE-2018-16871 affects Red Hat kernel:.
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