What is CVE-2021-47215?

CVE-2021-47215 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.13 onward and patched in 5.15.5 and 5.16. CVE-2021-47215 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47215?

CVE-2021-47215 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-2021-47215?

Yes, CVE-2021-47215 has been patched. Fixed versions include 5.15.5 and 5.16. If you are running Linux kernel 5.13 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47215 actively exploited?

CVE-2021-47215 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47215

Medium

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: kTLS, Fix crash in RX resync flow For the TLS RX resync flow, we maintain a list of TLS contexts that require some attention, to communicate their resync information to the HW. Here we fix list corruptions, by protecting the entries against movements coming from resync_handle_seq_match(), until their resync handling in napi is fully completed.

Package Linux Kernel

Published 2024-04-10

Last modified 2025-03-27

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 5.13 and later are affected. Fixed in 5.15.5, 5.16 and their respective stable series.

Affected from

≥ 5.13

Fixed in

✓ 5.15.5 5.15.x ✓ 5.16

References

2 total

Kernel Git
https://git.kernel.org/stable/c/cc4a9cc03faa6d8db1a6954bb536f2c1e63bdff6

Patch
Kernel Git
https://git.kernel.org/stable/c/ebeda7a9528ae690e6bf12791a868f0cca8391f2

Patch

Details

CVE ID CVE-2021-47215

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-04-10

Modified 2025-03-27

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47215?

CVE-2021-47215 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.13 onward and has been patched in 5.15.5 and 5.16. CVE-2021-47215 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47215?

CVE-2021-47215 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-2021-47215?

Yes. CVE-2021-47215 has been patched. Fixed versions include 5.15.5 and 5.16. If you are running Linux kernel 5.13 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47215 actively exploited?

No. CVE-2021-47215 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.