What is CVE-2024-56590?

CVE-2024-56590 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 2.6.12 onward and patched in 5.15.174, 6.1.120, 6.6.66 and others. CVE-2024-56590 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-56590?

CVE-2024-56590 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-2024-56590?

Yes, CVE-2024-56590 has been patched. Fixed versions include 5.15.174, 6.1.120, 6.6.66 and others. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-56590 actively exploited?

CVE-2024-56590 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-56590

Medium

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_core: Fix not checking skb length on hci_acldata_packet This fixes not checking if skb really contains an ACL header otherwise the code may attempt to access some uninitilized/invalid memory past the valid skb->data.

Package Linux Kernel

Published 2024-12-27

Last modified 2025-11-03

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

Weakness type

CWE-120

CVE-2024-56590 is classified as CWE-120

See CWE-120 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 2.6.12 and later are affected. Fixed in 5.15.174, 6.1.120, 6.6.66, 6.12.5, 6.13 and their respective stable series.

Affected from

≥ 2.6.12

Fixed in

✓ 5.15.174 5.15.x ✓ 6.1.120 6.1.x ✓ 6.6.66 6.6.x ✓ 6.12.5 6.12.x ✓ 6.13

References

The following references provide additional information about CVE-2024-56590 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
Kernel patch commit
https://git.kernel.org/stable/c/219960a48771b35a3857a491b955c31d6c33d581
Patch
Kernel patch commit
https://git.kernel.org/stable/c/3fe288a8214e7dd784d1f9b7c9e448244d316b47
Patch
Kernel patch commit
https://git.kernel.org/stable/c/559b1c7ac2e212a23b3833d3baf3bd957771d02e
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2024-56590

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-12-27

Modified 2025-11-03

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-56590?

CVE-2024-56590 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 2.6.12 onward and has been patched in 5.15.174, 6.1.120, 6.6.66 and others. CVE-2024-56590 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-56590?

CVE-2024-56590 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-2024-56590?

Yes — CVE-2024-56590 has been patched. Fixed versions include 5.15.174, 6.1.120, 6.6.66 and others. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-56590 actively exploited?

No — CVE-2024-56590 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.