What is CVE-2021-20219?

CVE-2021-20219 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10. CVE-2021-20219 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-20219?

CVE-2021-20219 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-2021-20219?

No patch is currently available for CVE-2021-20219. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-20219 actively exploited?

CVE-2021-20219 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-20219

Medium

A denial of service vulnerability was found in n_tty_receive_char_special in drivers/tty/n_tty.c of the Linux kernel. In this flaw a local attacker with a normal user privilege could delay the loop (due to a changing ldata->read_head, and a missing sanity check) and cause a threat to the system availability.

Package Linux Kernel

Published 2021-03-23

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-697

CVE-2021-20219 is classified as CWE-697

See CWE-697 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2021-20219 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=1923738

Issue Tracking Third Party Advisory

Details

CVE ID CVE-2021-20219

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2021-03-23

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-20219?

CVE-2021-20219 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . CVE-2021-20219 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-20219?

CVE-2021-20219 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-2021-20219?

No patch is currently available for CVE-2021-20219. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-20219 actively exploited?

No — CVE-2021-20219 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.