What is CVE-2021-47310?

CVE-2021-47310 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 3.10 onward and patched in 4.4.277, 4.9.277, 4.14.241 and others. CVE-2021-47310 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47310?

CVE-2021-47310 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-2021-47310?

Yes, CVE-2021-47310 has been patched. Fixed versions include 4.4.277, 4.9.277, 4.14.241 and others. If you are running Linux kernel 3.10 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47310 actively exploited?

CVE-2021-47310 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-2021-47310

High

In the Linux kernel, the following vulnerability has been resolved: net: ti: fix UAF in tlan_remove_one priv is netdev private data and it cannot be used after free_netdev() call. Using priv after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function.

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-2021-47310 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 3.10 and later are affected. Fixed in 4.4.277, 4.9.277, 4.14.241, 4.19.199, 5.4.135, 5.10.53, 5.13.5, 5.14 and their respective stable series.

Affected from

≥ 3.10

Fixed in

✓ 4.4.277 4.4.x ✓ 4.9.277 4.9.x ✓ 4.14.241 4.14.x ✓ 4.19.199 4.19.x ✓ 5.4.135 5.4.x ✓ 5.10.53 5.10.x ✓ 5.13.5 5.13.x ✓ 5.14

References

8 total

Kernel Git
https://git.kernel.org/stable/c/0336f8ffece62f882ab3012820965a786a983f70

Patch
Kernel Git
https://git.kernel.org/stable/c/0538b0ab7d2c396e385694228c7cdcd2d2c514e9

Patch
Kernel Git
https://git.kernel.org/stable/c/93efab0ef2a607fff9166d447c4035f98b5db342

Patch
Kernel Git
https://git.kernel.org/stable/c/a0a817b2d308fac090a05cbbe80988e073ac5193

Patch
Kernel Git
https://git.kernel.org/stable/c/a18a8d9cfbb112ad72e625372849adc3986fd6bf

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2021-47310

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-2021-47310?

CVE-2021-47310 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 3.10 onward and has been patched in 4.4.277, 4.9.277, 4.14.241 and others. CVE-2021-47310 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47310?

CVE-2021-47310 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-2021-47310?

Yes. CVE-2021-47310 has been patched. Fixed versions include 4.4.277, 4.9.277, 4.14.241 and others. If you are running Linux kernel 3.10 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47310 actively exploited?

No. CVE-2021-47310 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.