What is CVE-2021-47206?

CVE-2021-47206 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 2.6.28 onward and patched in 4.4.293, 4.9.291, 4.14.256 and others. CVE-2021-47206 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47206?

CVE-2021-47206 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-2021-47206?

Yes, CVE-2021-47206 has been patched. Fixed versions include 4.4.293, 4.9.291, 4.14.256 and others. If you are running Linux kernel 2.6.28 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47206 actively exploited?

CVE-2021-47206 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-2021-47206

Medium

In the Linux kernel, the following vulnerability has been resolved: usb: host: ohci-tmio: 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 2024-04-10

Last modified 2025-01-07

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-2021-47206 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 2.6.28 and later are affected. Fixed in 4.4.293, 4.9.291, 4.14.256, 4.19.218, 5.4.162, 5.10.82, 5.15.5, 5.16 and their respective stable series.

Affected from

≥ 2.6.28

Fixed in

✓ 4.4.293 4.4.x ✓ 4.9.291 4.9.x ✓ 4.14.256 4.14.x ✓ 4.19.218 4.19.x ✓ 5.4.162 5.4.x ✓ 5.10.82 5.10.x ✓ 5.15.5 5.15.x ✓ 5.16

References

8 total

Kernel Git
https://git.kernel.org/stable/c/065334f6640d074a1caec2f8b0091467a22f9483

Patch
Kernel Git
https://git.kernel.org/stable/c/2474eb7fc3bfbce10f7b8ea431fcffe5dd5f5100

Patch
Kernel Git
https://git.kernel.org/stable/c/28e016e02118917e50a667bc72fb80098cf2b460

Patch
Kernel Git
https://git.kernel.org/stable/c/2f18f97a1a787154a372c0738f1576f14b693d91

Patch
Kernel Git
https://git.kernel.org/stable/c/951b8239fd24678b56c995c5c0456ab12e059d19

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2021-47206

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-04-10

Modified 2025-01-07

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47206?

CVE-2021-47206 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 2.6.28 onward and has been patched in 4.4.293, 4.9.291, 4.14.256 and others. CVE-2021-47206 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47206?

CVE-2021-47206 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-2021-47206?

Yes. CVE-2021-47206 has been patched. Fixed versions include 4.4.293, 4.9.291, 4.14.256 and others. If you are running Linux kernel 2.6.28 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47206 actively exploited?

No. CVE-2021-47206 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.