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CVE-2026-46092

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: check for PCI upstream bridge existence pci_upstream_bridge() returns NULL if the device is on a root bus.

Published May 27, 2026CWE-476EPSS 0.14%

Overview

CVE-2026-46092 is a medium-severity vulnerability. It was published on May 27, 2026 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:

wifi: rtw88: check for PCI upstream bridge existence

pci_upstream_bridge() returns NULL if the device is on a root bus. If

8821CE is installed in the system with such a PCI topology, the probing

routine will crash. This has probably been unnoticed as 8821CE is mostly

supplied in laptops where there is a PCI-to-PCI bridge located upstream

from the device. However the card might be installed on a system with

different configuration.

Check if the bridge does exist for the specific workaround to be applied.

Found by Linux Verification Center (linuxtesting.org) with Svace static

analysis tool.

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/000134a20bbf89b1152520a2eef71f91fdb83a5bRefgit.kernel.org/stable/c/3b89b4c095804c478d50376285e66700cf3c045fRefgit.kernel.org/stable/c/3bbbb56204f7359ce2139a9341b43b52a186261cRefgit.kernel.org/stable/c/6c53d68e3bcfc8faccdd76c3383a9232b05c9ae6Refgit.kernel.org/stable/c/959c13da6c36167ce1016d400a6104d2367f686eRefgit.kernel.org/stable/c/cc9b6303e7ea91bc360b42c7edc1fe9ceb2f47feRefgit.kernel.org/stable/c/eb101d2abdcccb514ca4fccd3b278dd8267374f6

How CyberStrike helps

Frequently asked questions

What is CVE-2026-46092?

CVE-2026-46092 is a medium-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-46092?

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-2026-46092?

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-2026-46092?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-46092 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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