CVE-2018-16871

NameCVE-2018-16871
DescriptionA 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)jessie3.16.56-1+deb8u1fixed
jessie (security)3.16.81-1fixed
stretch4.9.210-1fixed
stretch (security)4.9.189-3+deb9u2fixed
buster4.19.118-2fixed
buster (security)4.19.98-1+deb10u1fixed
bullseye5.6.7-1fixed
sid5.6.14-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsource(unstable)4.18.20-1
linuxsourcejessie(not affected)
linuxsourcestretch4.9.144-1

Notes

[jessie] - linux <not-affected> (Vulnerable code not present)
https://git.kernel.org/linus/01310bb7c9c98752cc763b36532fab028e0f8f81
https://bugzilla.redhat.com/show_bug.cgi?id=1655162

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