CVE-2026-46092wifi: rtw88: check for PCI upstream bridge existence
- 5.5MediumCVSS base score
- 0.14%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 14 days later
· 14 days later
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.14% · top 97% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 617339466fda09916c4b4151fa5e6a9c1fdae353 – < 959c13da6c36167ce1016d400a6104d2367f686e
- affected 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a – < 3b89b4c095804c478d50376285e66700cf3c045f
- affected 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a – < cc9b6303e7ea91bc360b42c7edc1fe9ceb2f47fe
- affected 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a – < 6c53d68e3bcfc8faccdd76c3383a9232b05c9ae6
- affected 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a – < 000134a20bbf89b1152520a2eef71f91fdb83a5b
- affected 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a – < 3bbbb56204f7359ce2139a9341b43b52a186261c
- affected 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a – < eb101d2abdcccb514ca4fccd3b278dd8267374f6
- affected f21e8cb927fa9da49490b74ddda3856a828b82d6
- affected 5.15.17 – < 5.15.210
- affected 5.16.3 – < 5.17
- affected 5.17
- unaffected < 5.17
- unaffected 5.15.210 – ≤ 5.15.*
- unaffected 6.1.175 – ≤ 6.1.*
- unaffected 6.6.140 – ≤ 6.6.*
- unaffected 6.12.86 – ≤ 6.12.*
- unaffected 6.18.27 – ≤ 6.18.*
- unaffected 7.0.4 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References8
- https://git.kernel.org/stable/c/959c13da6c36167ce1016d400a6104d2367f686e (opens in a new tab)
- https://git.kernel.org/stable/c/3b89b4c095804c478d50376285e66700cf3c045f (opens in a new tab)
- https://git.kernel.org/stable/c/cc9b6303e7ea91bc360b42c7edc1fe9ceb2f47fe (opens in a new tab)
- https://git.kernel.org/stable/c/6c53d68e3bcfc8faccdd76c3383a9232b05c9ae6 (opens in a new tab)
- https://git.kernel.org/stable/c/000134a20bbf89b1152520a2eef71f91fdb83a5b (opens in a new tab)
- https://git.kernel.org/stable/c/3bbbb56204f7359ce2139a9341b43b52a186261c (opens in a new tab)
- https://git.kernel.org/stable/c/eb101d2abdcccb514ca4fccd3b278dd8267374f6 (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-32475 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-46092)Record last updated .