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CVE-2026-74741

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net: ngbe: fix NULL pointer dereference in non-MSI-X interrupt enabling In non-MSI-X mode (such as legacy INTx or single MSI),…

Published Aug 26, 2026EPSS 0.61%

Overview

CVE-2026-74741 is a high-severity vulnerability. It was published on August 26, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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

net: ngbe: fix NULL pointer dereference in non-MSI-X interrupt enabling

In non-MSI-X mode (such as legacy INTx or single MSI), wx->msix_entry is

not allocated or initialized. Calling NGBE_INTR_MISC(wx) dereferences

wx->msix_entry->entry, leading to a NULL pointer dereference crash.

This issue was introduced by fixing the IRQ vector when the number of

VFs is 7. Fix the issue by explicitly checking `pdev->msix_enabled` to

determine the correct vector index.

Additionally, as a side fix, set the interrupt mask to BIT(0) for the

non-MSI-X fallback. In MSI/INTx mode, the MISC and queue interrupts

share vector 0, and the WX_PX_MISC_IVAR register is only valid in the

MSI-X case. Thus, BIT(0) is the correct mask for the miscellaneous cause

when MSI-X is disabled.

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/0ab482b2195edc000262f0eae1cdcb416b8f335dRefgit.kernel.org/stable/c/5f3a13e0bb5ebcc1ca2dfda42ea40b9f3c2be6eaRefgit.kernel.org/stable/c/cef4c5b9aca24651d069adf9462b221df6a2a669

How CyberStrike helps

Frequently asked questions

What is CVE-2026-74741?

CVE-2026-74741 is a high-severity vulnerability. It was published on August 26, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-74741?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-74741?

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-2026-74741?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-74741 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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