What is CVE-2021-47501?

CVE-2021-47501 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), affecting Linux kernel versions from 3.12 onward and patched in 5.10.85, 5.15.8 and 5.16. CVE-2021-47501 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47501?

CVE-2021-47501 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-2021-47501?

Yes, CVE-2021-47501 has been patched. Fixed versions include 5.10.85, 5.15.8 and 5.16. If you are running Linux kernel 3.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47501 actively exploited?

CVE-2021-47501 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-2021-47501

Medium

In the Linux kernel, the following vulnerability has been resolved: i40e: Fix NULL pointer dereference in i40e_dbg_dump_desc When trying to dump VFs VSI RX/TX descriptors using debugfs there was a crash due to NULL pointer dereference in i40e_dbg_dump_desc. Added a check to i40e_dbg_dump_desc that checks if VSI type is correct for dumping RX/TX descriptors.

Package Linux Kernel

Published 2024-05-24

Last modified 2025-01-06

CVSS version 3.1

Patch available

Yes

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-2021-47501 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

Affected versions

Linux kernel versions 3.12 and later are affected. Fixed in 5.10.85, 5.15.8, 5.16 and their respective stable series.

Affected from

≥ 3.12

Fixed in

✓ 5.10.85 5.10.x ✓ 5.15.8 5.15.x ✓ 5.16

References

3 total

Kernel Git
https://git.kernel.org/stable/c/16431e442db248ecd8aa9457cf0a656f1885f56e

Patch
Kernel Git
https://git.kernel.org/stable/c/23ec111bf3549aae37140330c31a16abfc172421

Patch
Kernel Git
https://git.kernel.org/stable/c/e5b7fb2198abc50058f1a29c395b004f76ab1c83

Patch

Details

CVE ID CVE-2021-47501

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-24

Modified 2025-01-06

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47501?

CVE-2021-47501 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) . It affects Linux kernel versions from 3.12 onward and has been patched in 5.10.85, 5.15.8 and 5.16. CVE-2021-47501 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47501?

CVE-2021-47501 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-2021-47501?

Yes. CVE-2021-47501 has been patched. Fixed versions include 5.10.85, 5.15.8 and 5.16. If you are running Linux kernel 3.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47501 actively exploited?

No. CVE-2021-47501 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.