What is CVE-2019-20806?

CVE-2019-20806 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.4 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476). CVE-2019-20806 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2019-20806?

CVE-2019-20806 has a CVSS score of 4.4 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2019-20806?

No patch is currently available for CVE-2019-20806. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2019-20806 actively exploited?

CVE-2019-20806 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-2019-20806

Medium

An issue was discovered in the Linux kernel before 5.2. There is a NULL pointer dereference in tw5864_handle_frame() in drivers/media/pci/tw5864/tw5864-video.c, which may cause denial of service, aka CID-2e7682ebfc75.

Package Linux Kernel

Published 2020-05-27

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

4.4

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-476

CVE-2019-20806 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-2019-20806 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/2020-06/msg00022.html
Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2

Release Notes Vendor Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
Security
https://security.netapp.com/advisory/ntap-20200619-0001/
Debian Security
https://www.debian.org/security/2020/dsa-4698
Kernel patch commit
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2e7682ebfc750177a4944eeb56e97a3f05734528
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/2e7682ebfc750177a4944eeb56e97a3f05734528
Patch

Details

CVE ID CVE-2019-20806

Severity Medium

CVSS score 4.4 / 10

CVSS version 3.1

Published 2020-05-27

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2019-20806?

CVE-2019-20806 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.4 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . CVE-2019-20806 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2019-20806?

CVE-2019-20806 has a CVSS score of 4.4 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2019-20806?

No patch is currently available for CVE-2019-20806. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2019-20806 actively exploited?

No — CVE-2019-20806 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 →