What is CVE-2021-47372?

CVE-2021-47372 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 4.10 onward and patched in 4.14.249, 4.19.209, 5.4.150 and others. CVE-2021-47372 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47372?

CVE-2021-47372 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2021-47372?

Yes, CVE-2021-47372 has been patched. Fixed versions include 4.14.249, 4.19.209, 5.4.150 and others. If you are running Linux kernel 4.10 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47372 actively exploited?

CVE-2021-47372 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2021-47372

High

In the Linux kernel, the following vulnerability has been resolved: net: macb: fix use after free on rmmod plat_dev->dev->platform_data is released by platform_device_unregister(), use of pclk and hclk is a use-after-free. Since device unregister won't need a clk device we adjust the function call sequence to fix this issue. [ 31.261225] BUG: KASAN: use-after-free in macb_remove+0x77/0xc6 [macb_pci] [ 31.275563] Freed by task 306: [ 30.276782] platform_device_release+0x25/0x80

Package Linux Kernel

Published 2024-05-21

Last modified 2024-12-26

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-416

CVE-2021-47372 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 4.10 and later are affected. Fixed in 4.14.249, 4.19.209, 5.4.150, 5.10.70, 5.14.9, 5.15 and their respective stable series.

Affected from

≥ 4.10

Fixed in

✓ 4.14.249 4.14.x ✓ 4.19.209 4.19.x ✓ 5.4.150 5.4.x ✓ 5.10.70 5.10.x ✓ 5.14.9 5.14.x ✓ 5.15

References

6 total

Kernel Git
https://git.kernel.org/stable/c/1da750d1e2140ef43d64d17f301ff6f41b45541e

Patch
Kernel Git
https://git.kernel.org/stable/c/46670fb832ee80943715df618632ca13c2e96f2b

Patch
Kernel Git
https://git.kernel.org/stable/c/4ad6f2d23b0f6ac0d3e5f3102a4256d1c86c90f5

Patch
Kernel Git
https://git.kernel.org/stable/c/7721221e87d25c9840d9ca6b986dbdc410d5ce2b

Patch
Kernel Git
https://git.kernel.org/stable/c/a7d521cc726f30b8e679a6f36d04b18a8ab3c536

Patch

Showing 5 of 6 references View all on NVD

Details

CVE ID CVE-2021-47372

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2024-12-26

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47372?

CVE-2021-47372 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 4.10 onward and has been patched in 4.14.249, 4.19.209, 5.4.150 and others. CVE-2021-47372 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47372?

CVE-2021-47372 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2021-47372?

Yes. CVE-2021-47372 has been patched. Fixed versions include 4.14.249, 4.19.209, 5.4.150 and others. If you are running Linux kernel 4.10 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47372 actively exploited?

No. CVE-2021-47372 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.