CVE-2026-46092wifi: rtw88: check for PCI upstream bridge existence
Updated under an hour ago ()
Does this affect you?
It affects Linux and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 617339466fda09916c4b4151fa5e6a9c1fdae353 builds before 959c13da6c36167ce1016d400a6104d2367f686e; 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a builds before 3b89b4c095804c478d50376285e66700cf3c045f; from 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a before cc9b6303e7ea91bc360b42c7edc1fe9ceb2f47fe; 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a builds before 6c53d68e3bcfc8faccdd76c3383a9232b05c9ae6; from 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a before 000134a20bbf89b1152520a2eef71f91fdb83a5b; 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a builds before 3bbbb56204f7359ce2139a9341b43b52a186261c; from 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a before eb101d2abdcccb514ca4fccd3b278dd8267374f6; f21e8cb927fa9da49490b74ddda3856a828b82d6; and 2 more ranges | CNA record |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | all versions | CISA ADP |
linux linux_kernel linux:linux_kernel | from 5.15.17 before 5.16; from 5.16.3 before 7.1 | NVD |
References
- https://git.kernel.org/stable/c/959c13da6c36167ce1016d400a6104d2367f686e
- https://git.kernel.org/stable/c/3b89b4c095804c478d50376285e66700cf3c045f
- https://git.kernel.org/stable/c/cc9b6303e7ea91bc360b42c7edc1fe9ceb2f47fe
- https://git.kernel.org/stable/c/6c53d68e3bcfc8faccdd76c3383a9232b05c9ae6
- https://git.kernel.org/stable/c/000134a20bbf89b1152520a2eef71f91fdb83a5b
- https://git.kernel.org/stable/c/3bbbb56204f7359ce2139a9341b43b52a186261c
- https://git.kernel.org/stable/c/eb101d2abdcccb514ca4fccd3b278dd8267374f6patch
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.