CVE-2018-16871 Null dereference in kernel:

What is CVE-2018-16871?

CVE-2018-16871 is a high-severity vulnerability in Linux kernel, published on 30 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-476

Which versions are affected by CVE-2018-16871?

It affects 20 products.

Products include Linux kernel, Netapp Cloud Backup, Netapp H300e Firmware, Netapp H300s Firmware, Netapp H410c Firmware, Netapp H410s Firmware and 14 more.

How do I fix CVE-2018-16871?

Apply the vendor's patch.

Is CVE-2018-16871 being exploited?

There is no known exploitation of CVE-2018-16871 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-16871, GHSA-h4fx-7429-jvf7, UBUNTU-CVE-2018-16871.