What is CVE-2021-47409?

CVE-2021-47409 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 4.11 onward and patched in 4.14.250, 4.19.210, 5.4.152 and others. CVE-2021-47409 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47409?

CVE-2021-47409 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-2021-47409?

Yes, CVE-2021-47409 has been patched. Fixed versions include 4.14.250, 4.19.210, 5.4.152 and others. If you are running Linux kernel 4.11 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47409 actively exploited?

CVE-2021-47409 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-2021-47409

Medium

In the Linux kernel, the following vulnerability has been resolved: usb: dwc2: check return value after calling platform_get_resource() It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value.

Package Linux Kernel

Published 2024-05-21

Last modified 2024-12-30

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-2021-47409 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 4.11 and later are affected. Fixed in 4.14.250, 4.19.210, 5.4.152, 5.10.72, 5.14.11, 5.15 and their respective stable series.

Affected from

≥ 4.11

Fixed in

✓ 4.14.250 4.14.x ✓ 4.19.210 4.19.x ✓ 5.4.152 5.4.x ✓ 5.10.72 5.10.x ✓ 5.14.11 5.14.x ✓ 5.15

References

6 total

Kernel Git
https://git.kernel.org/stable/c/2754fa3b73df7d0ae042f3ed6cfd9df9042f6262

Patch
Kernel Git
https://git.kernel.org/stable/c/337f00a0bc62d7cb7d10ec0b872c79009a1641df

Patch
Kernel Git
https://git.kernel.org/stable/c/4b7f4a0eb92bf37bea4cd838c7f83ea42823ca8b

Patch
Kernel Git
https://git.kernel.org/stable/c/856e6e8e0f9300befa87dde09edb578555c99a82

Patch
Kernel Git
https://git.kernel.org/stable/c/8b9c1c33e51d0959f2aec573dfbac0ffd3f5c0b7

Patch

Showing 5 of 6 references View all on NVD

Details

CVE ID CVE-2021-47409

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2024-12-30

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47409?

CVE-2021-47409 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 4.11 onward and has been patched in 4.14.250, 4.19.210, 5.4.152 and others. CVE-2021-47409 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47409?

CVE-2021-47409 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-2021-47409?

Yes. CVE-2021-47409 has been patched. Fixed versions include 4.14.250, 4.19.210, 5.4.152 and others. If you are running Linux kernel 4.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47409 actively exploited?

No. CVE-2021-47409 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.