What is CVE-2019-19227?

CVE-2019-19227 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476). CVE-2019-19227 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2019-19227?

CVE-2019-19227 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2019-19227?

No patch is currently available for CVE-2019-19227. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2019-19227 actively exploited?

CVE-2019-19227 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2019-19227

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/appletalk/aarp.c and net/appletalk/ddp.c, as demonstrated by unregister_snap_client, aka CID-9804501fa122.

Package Linux Kernel

Published 2019-11-22

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-476

CVE-2019-19227 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2019-19227 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Lists
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html
Packet Storm
http://packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1

Release Notes Vendor Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
Debian Security
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
Seclists
https://seclists.org/bugtraq/2020/Jan/10
Security
https://security.netapp.com/advisory/ntap-20200103-0001/
Ubuntu Security
https://usn.ubuntu.com/4254-1/
Ubuntu Security
https://usn.ubuntu.com/4254-2/
Ubuntu Security
https://usn.ubuntu.com/4258-1/
Ubuntu Security
https://usn.ubuntu.com/4287-1/
Ubuntu Security
https://usn.ubuntu.com/4287-2/
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9804501fa1228048857910a6bf23e085aade37cc
Patch

Details

CVE ID CVE-2019-19227

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2019-11-22

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2019-19227?

CVE-2019-19227 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . CVE-2019-19227 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2019-19227?

CVE-2019-19227 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2019-19227?

No patch is currently available for CVE-2019-19227. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2019-19227 actively exploited?

No — CVE-2019-19227 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. View CWE-476 on MITRE CWE →