What is CVE-2021-47270?

CVE-2021-47270 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 4.6 onward and patched in 4.9.273, 4.14.237, 4.19.195 and others. CVE-2021-47270 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47270?

CVE-2021-47270 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-2021-47270?

Yes, CVE-2021-47270 has been patched. Fixed versions include 4.9.273, 4.14.237, 4.19.195 and others. If you are running Linux kernel 4.6 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47270 actively exploited?

CVE-2021-47270 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-2021-47270

Medium

In the Linux kernel, the following vulnerability has been resolved: usb: fix various gadgets null ptr deref on 10gbps cabling. This avoids a null pointer dereference in f_{ecm,eem,hid,loopback,printer,rndis,serial,sourcesink,subset,tcm} by simply reusing the 5gbps config for 10gbps.

Package Linux Kernel

Published 2024-05-21

Last modified 2024-12-24

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-2021-47270 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 4.6 and later are affected. Fixed in 4.9.273, 4.14.237, 4.19.195, 5.4.126, 5.10.44, 5.12.11, 5.13 and their respective stable series.

Affected from

≥ 4.6

Fixed in

✓ 4.9.273 4.9.x ✓ 4.14.237 4.14.x ✓ 4.19.195 4.19.x ✓ 5.4.126 5.4.x ✓ 5.10.44 5.10.x ✓ 5.12.11 5.12.x ✓ 5.13

References

7 total

Kernel Git
https://git.kernel.org/stable/c/10770d2ac0094b053c8897d96d7b2737cd72f7c5

Patch
Kernel Git
https://git.kernel.org/stable/c/4b289a0f3033f465b4fd51ba995251a7867a2aa2

Patch
Kernel Git
https://git.kernel.org/stable/c/8cd5f45c1b769e3e9e0f4325dd08b6c3749dc7ee

Patch
Kernel Git
https://git.kernel.org/stable/c/90c4d05780d47e14a50e11a7f17373104cd47d25

Patch
Kernel Git
https://git.kernel.org/stable/c/b4903f7fdc484628d0b8022daf86e2439d3ab4db

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2021-47270

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2024-12-24

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47270?

CVE-2021-47270 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 4.6 onward and has been patched in 4.9.273, 4.14.237, 4.19.195 and others. CVE-2021-47270 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47270?

CVE-2021-47270 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-2021-47270?

Yes. CVE-2021-47270 has been patched. Fixed versions include 4.9.273, 4.14.237, 4.19.195 and others. If you are running Linux kernel 4.6 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47270 actively exploited?

No. CVE-2021-47270 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.