What is CVE-2024-56654?

CVE-2024-56654 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.4.16 onward and patched in 6.6.67, 6.12.6 and 6.13. CVE-2024-56654 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-56654?

CVE-2024-56654 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-2024-56654?

Yes, CVE-2024-56654 has been patched. Fixed versions include 6.6.67, 6.12.6 and 6.13. If you are running Linux kernel 6.4.16 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-56654 actively exploited?

CVE-2024-56654 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-56654

Medium

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: Fix using rcu_read_(un)lock while iterating The usage of rcu_read_(un)lock while inside list_for_each_entry_rcu is not safe since for the most part entries fetched this way shall be treated as rcu_dereference: Note that the value returned by rcu_dereference() is valid only within the enclosing RCU read-side critical section [1]_. For example, the following is **not** legal:: rcu_read_lock(); p = rcu_dereference(head.next); rcu_read_unlock(); x = p->address; /* BUG!!! */ rcu_read_lock(); y = p->data; /* BUG!!! */ rcu_read_unlock();

Package Linux Kernel

Published 2024-12-27

Last modified 2025-10-01

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 6.4.16, 6.5.3, 6.6 and later are affected. Fixed in 6.6.67, 6.12.6, 6.13 and their respective stable series.

Affected from

≥ 6.4.16 ≥ 6.5.3 ≥ 6.6

Fixed in

✓ 6.6.67 6.6.x ✓ 6.12.6 6.12.x ✓ 6.13

References

The following references provide additional information about CVE-2024-56654 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/0108132d7d76d884e443d18b4f067cdf2811911b
Patch
Kernel patch commit
https://git.kernel.org/stable/c/581dd2dc168fe0ed2a7a5534a724f0d3751c93ae
Patch
Kernel patch commit
https://git.kernel.org/stable/c/f9ecc90b5d501b3a5a62d0685d5104f934bb0104
Patch

Details

CVE ID CVE-2024-56654

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-12-27

Modified 2025-10-01

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-56654?

CVE-2024-56654 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.4.16 onward and has been patched in 6.6.67, 6.12.6 and 6.13. CVE-2024-56654 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-56654?

CVE-2024-56654 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-2024-56654?

Yes — CVE-2024-56654 has been patched. Fixed versions include 6.6.67, 6.12.6 and 6.13. If you are running Linux kernel 6.4.16 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-56654 actively exploited?

No — CVE-2024-56654 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.