CVEvulnerability
CVE-2026-46092
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2026-05-27
- Last modified
- 2026-10-15
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-476
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.
Affected configurations
• linux linux kernel (>= 5.15.17 < 5.16)
• linux linux kernel (>= 5.16.3 < 7.1)
Related
Weakness · CWE (1)
- CWE-476 NULL Pointer Dereference weakness
References
- https://git.kernel.org/stable/c/000134a20bbf89b1152520a2eef71f91fdb83a5b git.kernel.org
- https://git.kernel.org/stable/c/3b89b4c095804c478d50376285e66700cf3c045f git.kernel.org
- https://git.kernel.org/stable/c/3bbbb56204f7359ce2139a9341b43b52a186261c git.kernel.org
- https://git.kernel.org/stable/c/6c53d68e3bcfc8faccdd76c3383a9232b05c9ae6 git.kernel.org
- https://git.kernel.org/stable/c/959c13da6c36167ce1016d400a6104d2367f686e git.kernel.org
- https://git.kernel.org/stable/c/cc9b6303e7ea91bc360b42c7edc1fe9ceb2f47fe git.kernel.org
- https://git.kernel.org/stable/c/eb101d2abdcccb514ca4fccd3b278dd8267374f6 Patch
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html cert-portal.siemens.com