CVEvulnerability
CVE-2019-19227
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2019-11-22
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 2.1 LOW — AV:L/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-476
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.
Affected configurations
• linux linux kernel (< 5.1)
Related
Weakness · CWE (1)
- CWE-476 NULL Pointer Dereference weakness
References
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html lists.opensuse.org
- http://packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html packetstormsecurity.com
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1 Release Notes, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9804501fa1228048857910a6bf23e085aade37cc Issue Tracking, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html lists.debian.org
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html lists.debian.org
- https://seclists.org/bugtraq/2020/Jan/10 seclists.org
- https://security.netapp.com/advisory/ntap-20200103-0001/ security.netapp.com
- https://usn.ubuntu.com/4254-1/ usn.ubuntu.com
- https://usn.ubuntu.com/4254-2/ usn.ubuntu.com
- https://usn.ubuntu.com/4258-1/ usn.ubuntu.com
- https://usn.ubuntu.com/4287-1/ usn.ubuntu.com
- https://usn.ubuntu.com/4287-2/ usn.ubuntu.com
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html lists.opensuse.org
- http://packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html packetstormsecurity.com
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1 Release Notes, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9804501fa1228048857910a6bf23e085aade37cc Issue Tracking, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html lists.debian.org
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html lists.debian.org
- https://seclists.org/bugtraq/2020/Jan/10 seclists.org
- https://security.netapp.com/advisory/ntap-20200103-0001/ security.netapp.com
- https://usn.ubuntu.com/4254-1/ usn.ubuntu.com
- https://usn.ubuntu.com/4254-2/ usn.ubuntu.com
- https://usn.ubuntu.com/4258-1/ usn.ubuntu.com
- https://usn.ubuntu.com/4287-1/ usn.ubuntu.com
- https://usn.ubuntu.com/4287-2/ usn.ubuntu.com