CVE-2019-19227

NameCVE-2019-19227
DescriptionIn the AppleTalk subsystem in the Linux kernel before 5.1, there is a potential NULL pointer dereference because register_snap_client may return NULL. This will lead to denial of service in net/appletalk/aarp.c and net/appletalk/ddp.c, as demonstrated by unregister_snap_client, aka CID-9804501fa122.
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)
ReferencesDLA-2068-1, DLA-2114-1
NVD severitylow

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)stretch4.9.228-1fixed
stretch (security)4.9.240-2fixed
buster4.19.160-2fixed
buster (security)4.19.152-1fixed
bullseye, sid5.9.11-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcejessie3.16.81-1DLA-2068-1
linuxsourcestretch4.9.210-1
linuxsourcebuster4.19.98-1
linuxsource(unstable)5.2.6-1
linux-4.9sourcejessie4.9.210-1~deb8u1DLA-2114-1

Notes

https://git.kernel.org/linus/9804501fa1228048857910a6bf23e085aade37cc

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