CVE-2024-56760

5.5 · MEDIUM

Published Jan 6, 2025 linux EPSS 0.21% (11th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-56760 is a medium-severity vulnerability affecting linux linux_kernel. It was published on January 6, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

PCI/MSI: Handle lack of irqdomain gracefully

Alexandre observed a warning emitted from pci_msi_setup_msi_irqs() on a

RISCV platform which does not provide PCI/MSI support:

WARNING: CPU: 1 PID: 1 at drivers/pci/msi/msi.h:121 pci_msi_setup_msi_irqs+0x2c/0x32

__pci_enable_msix_range+0x30c/0x596

pci_msi_setup_msi_irqs+0x2c/0x32

pci_alloc_irq_vectors_affinity+0xb8/0xe2

RISCV uses hierarchical interrupt domains and correctly does not implement

the legacy fallback. The warning triggers from the legacy fallback stub.

That warning is bogus as the PCI/MSI layer knows whether a PCI/MSI parent

domain is associated with the device or not. There is a check for MSI-X,

which has a legacy assumption. But that legacy fallback assumption is only

valid when legacy support is enabled, but otherwise the check should simply

return -ENOTSUPP.

Loongarch tripped over the same problem and blindly enabled legacy support

without implemen

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor	Product	Versions	Status
linux	linux_kernel	>= 6.2, < 6.6.69	Affected

References

Ref git.kernel.org/stable/c/a60b990798eb17433d0283788280422b1bd94b18 Ref git.kernel.org/stable/c/aed157301c659a48f5564cc4568cf0e5c8831af0 Ref git.kernel.org/stable/c/b1f7476e07b93d65a1a3643dcb4a7bed80d4328d

Frequently Asked Questions

What is CVE-2024-56760?

CVE-2024-56760 is a medium-severity vulnerability affecting linux linux_kernel. It was published on January 6, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-56760?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-56760?

How can CyberStrike help with CVE-2024-56760?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-56760 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

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HackBrowser

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