Vulnerability Description
In 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.1 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html
- http://packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackwar
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1Release NotesVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=98Issue TrackingPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
- https://seclists.org/bugtraq/2020/Jan/10
- https://security.netapp.com/advisory/ntap-20200103-0001/
- https://usn.ubuntu.com/4254-1/
- https://usn.ubuntu.com/4254-2/
- https://usn.ubuntu.com/4258-1/
- https://usn.ubuntu.com/4287-1/
- https://usn.ubuntu.com/4287-2/
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html
- http://packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackwar
FAQ
What is CVE-2019-19227?
CVE-2019-19227 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In 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/applet...
How severe is CVE-2019-19227?
CVE-2019-19227 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-19227?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.