CVE-2026-46092: Linux vulnerability

CVE-2026-46092: wifi: rtw88: check for PCI upstream bridge existence

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.

UnknownCVSS not scoredNot KEV-listedUpdatedOct 15, 2026, 01:20 UTC (UTC+00:00)

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 27, 2026, 12:58 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

3Timeline events

1ADP providers

9Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
May 13, 2026, 15:03 UTC (UTC+00:00)
CVE publishedCVE Program
The CVE record was published.
May 27, 2026, 12:58 UTC (UTC+00:00)
CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Oct 15, 2026, 01:20 UTC (UTC+00:00)

ADP provider summaries

Source materials

CVE List V5 sourceCVE List V5
https://git.kernel.org/stable/c/959c13da6c36167ce1016d400a6104d2367f686eCVE reference, Linux
https://git.kernel.org/stable/c/3b89b4c095804c478d50376285e66700cf3c045fCVE reference, Linux
https://git.kernel.org/stable/c/cc9b6303e7ea91bc360b42c7edc1fe9ceb2f47feCVE reference, Linux
https://git.kernel.org/stable/c/6c53d68e3bcfc8faccdd76c3383a9232b05c9ae6CVE reference, Linux
https://git.kernel.org/stable/c/000134a20bbf89b1152520a2eef71f91fdb83a5bCVE reference, Linux
https://git.kernel.org/stable/c/3bbbb56204f7359ce2139a9341b43b52a186261cCVE reference, Linux
https://git.kernel.org/stable/c/eb101d2abdcccb514ca4fccd3b278dd8267374f6CVE reference, Linux
https://cert-portal.siemens.com/productcert/html/ssa-784472.htmlCVE reference, siemens-SADP

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

LinuxLinux617339466fda09916c4b4151fa5e6a9c1fdae353, 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a, 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a, 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a, 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a, 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a, 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a, f21e8cb927fa9da49490b74ddda3856a828b82d6, 5.15.17, 5.16.3unaffected

LinuxLinux5.17, 0, 5.15.210, 6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4, 7.1affected

Weakness

CWE details

No CWE listed

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