What is CVE-2021-47403?

CVE-2021-47403 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, classified as a Information Exposure flaw (CWE-200). CVE-2021-47403 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47403?

CVE-2021-47403 has a CVSS score of 7.1 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

Is there a patch available for CVE-2021-47403?

No patch is currently available for CVE-2021-47403. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-47403 actively exploited?

CVE-2021-47403 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Information Exposure (CWE-200)?

The product exposes sensitive information to an actor not authorised to see it. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/200.html

CVE-2021-47403

High

In the Linux kernel, the following vulnerability has been resolved: ipack: ipoctal: fix module reference leak A reference to the carrier module was taken on every open but was only released once when the final reference to the tty struct was dropped. Fix this by taking the module reference and initialising the tty driver data when installing the tty.

Package Linux Kernel

Published 2024-05-21

Last modified 2025-04-02

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-200

CVE-2021-47403 is a Information Exposure vulnerability

What is Information Exposure?

The product exposes sensitive information to an actor not authorised to see it. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2021-47403 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/31398849b84ebae0d43a1cf379cb9895597f221a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/3253c87e1e5bc0107aab773af2f135ebccf38666
Patch
Kernel patch commit
https://git.kernel.org/stable/c/7cea848678470daadbfdaa6a112b823c290f900c
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2021-47403

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2025-04-02

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-47403?

CVE-2021-47403 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 , classified as an Information Exposure flaw (CWE-200) . CVE-2021-47403 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47403?

CVE-2021-47403 has a CVSS score of 7.1 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
Is there a patch available for CVE-2021-47403?

No patch is currently available for CVE-2021-47403. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-47403 actively exploited?

No — CVE-2021-47403 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Information Exposure (CWE-200)?

The product exposes sensitive information to an actor not authorised to see it. View CWE-200 on MITRE CWE →