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, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2068-1, DLA-2114-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)bullseye5.10.223-1fixed
bullseye (security)5.10.226-1fixed
bookworm6.1.115-1fixed
bookworm (security)6.1.112-1fixed
trixie6.11.7-1fixed
sid6.11.9-1fixed

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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