What is CVE-2025-40213?

CVE-2025-40213 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 6.6.140 onward and patched in 6.17.8 and 6.18. CVE-2025-40213 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-40213?

CVE-2025-40213 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-2025-40213?

Yes, CVE-2025-40213 has been patched. Fixed versions include 6.17.8 and 6.18. If you are running Linux kernel 6.6.140 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-40213 actively exploited?

CVE-2025-40213 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-40213

High

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: fix crash in set_mesh_sync and set_mesh_complete There is a BUG: KASAN: stack-out-of-bounds in set_mesh_sync due to memcpy from badly declared on-stack flexible array. Another crash is in set_mesh_complete() due to double list_del via mgmt_pending_valid + mgmt_pending_remove. Use DEFINE_FLEX to declare the flexible array right, and don't memcpy outside bounds. As mgmt_pending_valid removes the cmd from list, use mgmt_pending_free, and also report status on error.

Package Linux Kernel

Published 2025-11-24

Last modified 2026-07-30

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

Affected versions

Linux kernel versions 6.6.140, 6.16.10, 6.17 and later are affected. Fixed in 6.17.8, 6.18 and their respective stable series.

Affected from

≥ 6.6.140 ≥ 6.16.10 ≥ 6.17

Fixed in

✓ 6.17.8 6.17.x ✓ 6.18

References

3 total

Details

CVE ID CVE-2025-40213

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-11-24

Modified 2026-07-30

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-40213?

CVE-2025-40213 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 6.6.140 onward and has been patched in 6.17.8 and 6.18. CVE-2025-40213 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-40213?

CVE-2025-40213 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-2025-40213?

Yes. CVE-2025-40213 has been patched. Fixed versions include 6.17.8 and 6.18. If you are running Linux kernel 6.6.140 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-40213 actively exploited?

No. CVE-2025-40213 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.