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CVE-2024-26810

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Lock external INTx masking ops Mask operations through config space changes to DisINTx may race INTx configuration ch…

Published Apr 5, 2024CWE-362EPSS 0.20%

Overview

CVE-2024-26810 is a high-severity vulnerability. It was published on April 5, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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:

vfio/pci: Lock external INTx masking ops

Mask operations through config space changes to DisINTx may race INTx

configuration changes via ioctl. Create wrappers that add locking for

paths outside of the core interrupt code.

In particular, irq_type is updated holding igate, therefore testing

is_intx() requires holding igate. For example clearing DisINTx from

config space can otherwise race changes of the interrupt configuration.

This aligns interfaces which may trigger the INTx eventfd into two

camps, one side serialized by igate and the other only enabled while

INTx is configured. A subsequent patch introduces synchronization for

the latter flows.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Refgit.kernel.org/stable/c/03505e3344b0576fd619416793a31eae9c5b73bfRefgit.kernel.org/stable/c/04a4a017b9ffd7b0f427b8c376688d14cb614651Refgit.kernel.org/stable/c/1e71b6449d55179170efc8dee8664510bb813b42Refgit.kernel.org/stable/c/3dd9be6cb55e0f47544e7cdda486413f7134e3b3Refgit.kernel.org/stable/c/3fe0ac10bd117df847c93408a9d428a453cd60e5Refgit.kernel.org/stable/c/6fe478d855b20ac1eb5da724afe16af5a2aaaa40Refgit.kernel.org/stable/c/810cd4bb53456d0503cc4e7934e063835152c1b7Refgit.kernel.org/stable/c/ec73e079729258a05452356cf6d098bf1504d5a6Refgit.kernel.org/stable/c/03505e3344b0576fd619416793a31eae9c5b73bfRefgit.kernel.org/stable/c/04a4a017b9ffd7b0f427b8c376688d14cb614651

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26810?

CVE-2024-26810 is a high-severity vulnerability. It was published on April 5, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-26810?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-26810?

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

How can CyberStrike help with CVE-2024-26810?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26810 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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