CVE-2018-16871

Name	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	bullseye	5.10.223-1	fixed
	bullseye (security)	5.10.226-1	fixed
	bookworm	6.1.115-1	fixed
	bookworm (security)	6.1.119-1	fixed
	trixie	6.12.5-1	fixed
	sid	6.12.6-1	fixed

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

Package	Type	Release	Fixed Version
linux	source	jessie	(not affected)
linux	source	stretch	4.9.144-1
linux	source	(unstable)	4.18.20-1

Notes

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