CVE-2026-46092
N/A
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a < eb101d2abdcccb514ca4fccd3b278dd8267374f6 | affected |
| Linux | Linux | 617339466fda09916c4b4151fa5e6a9c1fdae353 | affected |
| Linux | Linux | f21e8cb927fa9da49490b74ddda3856a828b82d6 | affected |
| Linux | Linux | 5.15.17 < 5.16 | affected |
| Linux | Linux | 5.16.3 < 5.17 | affected |
| Linux | Linux | 5.17 | affected |
| Linux | Linux | 0 < 5.17 | unaffected |
| Linux | Linux | 7.1 <= * | unaffected |
Weaknesses
References
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