CVE-2024-26810

MEDIUM
Published Apr 5, 2024 Modified May 12, 2026 CWE-362

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.

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CVSS v3.1 Score

4.4
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-362 CWE-362

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/03505e3344b0576fd619416793a31eae9c5b73bf https://git.kernel.org/stable/c/04a4a017b9ffd7b0f427b8c376688d14cb614651 https://git.kernel.org/stable/c/1e71b6449d55179170efc8dee8664510bb813b42 https://git.kernel.org/stable/c/3dd9be6cb55e0f47544e7cdda486413f7134e3b3 https://git.kernel.org/stable/c/3fe0ac10bd117df847c93408a9d428a453cd60e5 https://git.kernel.org/stable/c/6fe478d855b20ac1eb5da724afe16af5a2aaaa40 https://git.kernel.org/stable/c/810cd4bb53456d0503cc4e7934e063835152c1b7 https://git.kernel.org/stable/c/ec73e079729258a05452356cf6d098bf1504d5a6 https://git.kernel.org/stable/c/03505e3344b0576fd619416793a31eae9c5b73bf https://git.kernel.org/stable/c/04a4a017b9ffd7b0f427b8c376688d14cb614651 https://git.kernel.org/stable/c/1e71b6449d55179170efc8dee8664510bb813b42 https://git.kernel.org/stable/c/3dd9be6cb55e0f47544e7cdda486413f7134e3b3 https://git.kernel.org/stable/c/3fe0ac10bd117df847c93408a9d428a453cd60e5 https://git.kernel.org/stable/c/6fe478d855b20ac1eb5da724afe16af5a2aaaa40 https://git.kernel.org/stable/c/810cd4bb53456d0503cc4e7934e063835152c1b7 https://git.kernel.org/stable/c/ec73e079729258a05452356cf6d098bf1504d5a6

Frequently Asked Questions

What is CVE-2024-26810? +
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. It has a CVSS v3.1 base score of 4.4 (MEDIUM).
How severe is CVE-2024-26810? +
CVE-2024-26810 has a CVSS v3.1 score of 4.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2024-26810? +
CVE-2024-26810 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-26810? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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