What is CVE-2021-47252?

CVE-2021-47252 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 3.14 onward and patched in 4.4.293, 4.9.274, 4.14.238 and others. CVE-2021-47252 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47252?

CVE-2021-47252 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-2021-47252?

Yes, CVE-2021-47252 has been patched. Fixed versions include 4.4.293, 4.9.274, 4.14.238 and others. If you are running Linux kernel 3.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47252 actively exploited?

CVE-2021-47252 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47252

Medium

In the Linux kernel, the following vulnerability has been resolved: batman-adv: Avoid WARN_ON timing related checks The soft/batadv interface for a queued OGM can be changed during the time the OGM was queued for transmission and when the OGM is actually transmitted by the worker. But WARN_ON must be used to denote kernel bugs and not to print simple warnings. A warning can simply be printed using pr_warn.

Package Linux Kernel

Published 2024-05-21

Last modified 2025-04-30

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

Affected versions

Linux kernel versions 3.14 and later are affected. Fixed in 4.4.293, 4.9.274, 4.14.238, 4.19.196, 5.4.128, 5.10.46, 5.12.13, 5.13 and their respective stable series.

Affected from

≥ 3.14

Fixed in

✓ 4.4.293 4.4.x ✓ 4.9.274 4.9.x ✓ 4.14.238 4.14.x ✓ 4.19.196 4.19.x ✓ 5.4.128 5.4.x ✓ 5.10.46 5.10.x ✓ 5.12.13 5.12.x ✓ 5.13

References

8 total

Kernel Git
https://git.kernel.org/stable/c/282baa8104af44e04c4af3e7f933b44267c7f86f

Patch
Kernel Git
https://git.kernel.org/stable/c/2eb4e0b3631832a4291c8bf4c9db873f60b128c8

Patch
Kernel Git
https://git.kernel.org/stable/c/45011f2973f6b52cf50db397bb27bf805f5f0e7f

Patch
Kernel Git
https://git.kernel.org/stable/c/6031daaaf6d5c359c99dfffa102e332df234ff09

Patch
Kernel Git
https://git.kernel.org/stable/c/77a99aad5bc3ea105806ebae6be3cbadc2fc615e

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2021-47252

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2025-04-30

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47252?

CVE-2021-47252 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 3.14 onward and has been patched in 4.4.293, 4.9.274, 4.14.238 and others. CVE-2021-47252 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47252?

CVE-2021-47252 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-2021-47252?

Yes. CVE-2021-47252 has been patched. Fixed versions include 4.4.293, 4.9.274, 4.14.238 and others. If you are running Linux kernel 3.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47252 actively exploited?

No. CVE-2021-47252 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.