What is CVE-2024-56561?

CVE-2024-56561 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 6.11.4 onward and patched in 6.12.4 and 6.13. CVE-2024-56561 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-56561?

CVE-2024-56561 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-2024-56561?

Yes, CVE-2024-56561 has been patched. Fixed versions include 6.12.4 and 6.13. If you are running Linux kernel 6.11.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-56561 actively exploited?

CVE-2024-56561 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2024-56561

High

In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: Fix PCI domain ID release in pci_epc_destroy() pci_epc_destroy() invokes pci_bus_release_domain_nr() to release the PCI domain ID, but there are two issues: - 'epc->dev' is passed to pci_bus_release_domain_nr() which was already freed by device_unregister(), leading to a use-after-free issue. - Domain ID corresponds to the EPC device parent, so passing 'epc->dev' is also wrong. Fix these issues by passing 'epc->dev.parent' to pci_bus_release_domain_nr() and also do it before device_unregister(). [mani: reworded subject and description]

Package Linux Kernel

Published 2024-12-27

Last modified 2025-02-11

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

Weakness type

CWE-416

CVE-2024-56561 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.11.4, 6.12 and later are affected. Fixed in 6.12.4, 6.13 and their respective stable series.

Affected from

≥ 6.11.4 ≥ 6.12

Fixed in

✓ 6.12.4 6.12.x ✓ 6.13

References

2 total

Kernel Git
https://git.kernel.org/stable/c/4acc902ed3743edd4ac2d3846604a99d17104359

Patch
Kernel Git
https://git.kernel.org/stable/c/c74a1df6c2a2df7dd45c3fc1a5edc29a075dcf22

Patch

Details

CVE ID CVE-2024-56561

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-12-27

Modified 2025-02-11

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-56561?

CVE-2024-56561 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 6.11.4 onward and has been patched in 6.12.4 and 6.13. CVE-2024-56561 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-56561?

CVE-2024-56561 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-2024-56561?

Yes. CVE-2024-56561 has been patched. Fixed versions include 6.12.4 and 6.13. If you are running Linux kernel 6.11.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-56561 actively exploited?

No. CVE-2024-56561 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.