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CVE-2026-74395

Published Aug 15, 2026 EPSS 0.18% (7th pctl)

Overview

CVE-2026-74395 is a known-severity vulnerability. It was published on August 15, 2026.

Technical Description

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

RDMA/mlx5: Fix devx subscribe-event unwind NULL dereference

MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT() links event_sub into sub_list

before initializing the fields used by the shared error path.

If eventfd_ctx_fdget() then fails, the unwind path dereferences

event_sub->ev_file in uverbs_uobject_put() and calls

subscribe_event_xa_dealloc() with an unset xa_key_level1.

subscribe_event_xa_alloc() creates the XA entry exactly once for a given

key_level1, on the first occurrence of that key. The unwind path must

therefore call subscribe_event_xa_dealloc() exactly once for it as well.

Enforce that by adding devx_key_in_sub_list() and calling

subscribe_event_xa_dealloc() only when the last matching pending entry is

being cleaned up.

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

Ref git.kernel.org/stable/c/1025dc2f7ba29b04b8687790fa91f9cd1a53141e Ref git.kernel.org/stable/c/43f8f7946814c8e5f464518246fdbc69b6e32326 Ref git.kernel.org/stable/c/5100febf8e9d6c8c5ba8dc6534c6a5e3376e5989 Ref git.kernel.org/stable/c/6e15b770461eeaa0ff73934922cb670a6a9db04e Ref git.kernel.org/stable/c/78b9589fda266c71f0f9d0c858d4fa7381a890a5 Ref git.kernel.org/stable/c/7921821fc2b19c01588311f6e7468ae5b68b1f61 Ref git.kernel.org/stable/c/9be9aca28424228586fe9211c373ebdb826ebb6c Ref git.kernel.org/stable/c/f345e744b6b087188cde2377da5cbe9713b61353

Frequently Asked Questions

What is CVE-2026-74395?

CVE-2026-74395 is a known-severity vulnerability. It was published on August 15, 2026.

How severe is CVE-2026-74395?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-74395?

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-2026-74395?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-74395 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.

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