What is CVE-2021-47260?

CVE-2021-47260 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 3.17 onward and patched in 4.4.273, 4.9.273, 4.14.237 and others. CVE-2021-47260 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47260?

CVE-2021-47260 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-2021-47260?

Yes, CVE-2021-47260 has been patched. Fixed versions include 4.4.273, 4.9.273, 4.14.237 and others. If you are running Linux kernel 3.17 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47260 actively exploited?

CVE-2021-47260 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-2021-47260

Medium

In the Linux kernel, the following vulnerability has been resolved: NFS: Fix a potential NULL dereference in nfs_get_client() None of the callers are expecting NULL returns from nfs_get_client() so this code will lead to an Oops. It's better to return an error pointer. I expect that this is dead code so hopefully no one is affected.

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-2021-47260 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 3.17 and later are affected. Fixed in 4.4.273, 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

≥ 3.17

Fixed in

✓ 4.4.273 4.4.x ✓ 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

8 total

Kernel Git
https://git.kernel.org/stable/c/0057ecef9f324007c0ba5fcca4ddd131178ce78b

Patch
Kernel Git
https://git.kernel.org/stable/c/09226e8303beeec10f2ff844d2e46d1371dc58e0

Patch
Kernel Git
https://git.kernel.org/stable/c/279ad78a00f8b9c5ff24171a59297187a3bd44b7

Patch
Kernel Git
https://git.kernel.org/stable/c/4b380a7d84ef2ce3f4f5bec5d8706ed937ac6502

Patch
Kernel Git
https://git.kernel.org/stable/c/58ddf61f10b8f9b7b1341644bfee2f1c6508d4e1

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2021-47260

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-2021-47260?

CVE-2021-47260 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 3.17 onward and has been patched in 4.4.273, 4.9.273, 4.14.237 and others. CVE-2021-47260 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47260?

CVE-2021-47260 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-2021-47260?

Yes. CVE-2021-47260 has been patched. Fixed versions include 4.4.273, 4.9.273, 4.14.237 and others. If you are running Linux kernel 3.17 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47260 actively exploited?

No. CVE-2021-47260 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.