What is CVE-2024-56676?

CVE-2024-56676 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.12 onward and patched in 6.12.2 and 6.13. CVE-2024-56676 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-56676?

CVE-2024-56676 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-2024-56676?

Yes, CVE-2024-56676 has been patched. Fixed versions include 6.12.2 and 6.13. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-56676 actively exploited?

CVE-2024-56676 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-56676

Medium

In the Linux kernel, the following vulnerability has been resolved: thermal: testing: Initialize some variables annoteded with _free() Variables annotated with __free() need to be initialized if the function can return before they get updated for the first time or the attempt to free the memory pointed to by them upon function return may crash the kernel. Fix this issue in some places in the thermal testing code.

Package Linux Kernel

Published 2024-12-28

Last modified 2025-09-26

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-909

CVE-2024-56676 is classified as CWE-909

See CWE-909 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 6.12 and later are affected. Fixed in 6.12.2, 6.13 and their respective stable series.

Affected from

≥ 6.12

Fixed in

✓ 6.12.2 6.12.x ✓ 6.13

References

The following references provide additional information about CVE-2024-56676 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/0104dcdaad3a7afd141e79a5fb817a92ada910ac
Patch
Kernel patch commit
https://git.kernel.org/stable/c/526c132124a62be486bad1701f7e8e92212ccec6
Patch

Details

CVE ID CVE-2024-56676

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-12-28

Modified 2025-09-26

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-56676?

CVE-2024-56676 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.12 onward and has been patched in 6.12.2 and 6.13. CVE-2024-56676 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-56676?

CVE-2024-56676 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-2024-56676?

Yes — CVE-2024-56676 has been patched. Fixed versions include 6.12.2 and 6.13. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-56676 actively exploited?

No — CVE-2024-56676 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.