What is CVE-2024-56573?

CVE-2024-56573 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Release of Invalid Pointer or Reference flaw (CWE-763), affecting Linux kernel versions from 6.2 onward and patched in 6.6.64, 6.12.4 and 6.13. CVE-2024-56573 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-56573?

CVE-2024-56573 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-2024-56573?

Yes, CVE-2024-56573 has been patched. Fixed versions include 6.6.64, 6.12.4 and 6.13. If you are running Linux kernel 6.2 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-56573 actively exploited?

CVE-2024-56573 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Release of Invalid Pointer or Reference (CWE-763)?

The product attempts to return a memory resource to the system but calls the wrong release function. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/763.html

CVE-2024-56573

Medium

In the Linux kernel, the following vulnerability has been resolved: efi/libstub: Free correct pointer on failure cmdline_ptr is an out parameter, which is not allocated by the function itself, and likely points into the caller's stack. cmdline refers to the pool allocation that should be freed when cleaning up after a failure, so pass this instead to free_pool().

Package Linux Kernel

Published 2024-12-27

Last modified 2025-10-07

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-763

CVE-2024-56573 is a Release of Invalid Pointer or Reference vulnerability

What is Release of Invalid Pointer or Reference?

The product attempts to return a memory resource to the system but calls the wrong release function. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.2 and later are affected. Fixed in 6.6.64, 6.12.4, 6.13 and their respective stable series.

Affected from

≥ 6.2

Fixed in

✓ 6.6.64 6.6.x ✓ 6.12.4 6.12.x ✓ 6.13

References

The following references provide additional information about CVE-2024-56573 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/06d39d79cbd5a91a33707951ebf2512d0e759847
Patch
Kernel patch commit
https://git.kernel.org/stable/c/d173aee5709bd0994d216d60589ec67f8b11376a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/eaafbcf0a5782ae412ca7de12ef83fc48ccea4cf
Patch

Details

CVE ID CVE-2024-56573

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-12-27

Modified 2025-10-07

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-56573?

CVE-2024-56573 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Release of Invalid Pointer or Reference flaw (CWE-763) . It affects Linux kernel versions from 6.2 onward and has been patched in 6.6.64, 6.12.4 and 6.13. CVE-2024-56573 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-56573?

CVE-2024-56573 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-2024-56573?

Yes — CVE-2024-56573 has been patched. Fixed versions include 6.6.64, 6.12.4 and 6.13. If you are running Linux kernel 6.2 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-56573 actively exploited?

No — CVE-2024-56573 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Release of Invalid Pointer or Reference (CWE-763)?

The product attempts to return a memory resource to the system but calls the wrong release function. View CWE-763 on MITRE CWE →