CVE-2018-16871

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-07-30 · updated 2026-06-17
Weakness: CWE-476

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.

Affected products

Linux kernel: from 3.0 through 4.20
NetApp Cloud Backup: all versions
NetApp H300E Firmware: all versions
NetApp H300S Firmware: all versions
NetApp H410C Firmware: all versions
NetApp H410S Firmware: all versions
NetApp H500E Firmware: all versions
NetApp H500S Firmware: all versions
NetApp H700E Firmware: all versions
NetApp H700S Firmware: all versions
RedHat Developer Tools: 1.0
Red Hat Enterprise Linux: 7.0
RedHat Enterprise Linux Desktop: 7.0
RedHat Enterprise Linux Eus: 7.4
RedHat Enterprise Linux Server: 7.0
RedHat Enterprise Linux Server Aus: 7.4, 7.6
RedHat Enterprise Linux Server Eus: 7.6
RedHat Enterprise Linux Server Tus: 7.4, 7.6
RedHat Enterprise Linux Workstation: 7.0
RedHat Mrg Realtime: 2.0

References

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