Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 617339466fda09916c4b4151fa5e6a9c1fdae353 before 959c13da6c36167ce1016d400a6104d2367f686e; affected 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a before 3b89b4c095804c478d50376285e66700cf3c045f; affected 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a before cc9b6303e7ea91bc360b42c7edc1fe9ceb2f47fe; affected 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a before 6c53d68e3bcfc8faccdd76c3383a9232b05c9ae6; affected 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a before 000134a20bbf89b1152520a2eef71f91fdb83a5b; affected 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a before 3bbbb56204f7359ce2139a9341b43b52a186261c; affected 24f5e38a13b5ae2b6105cda8bb47c19108e62a9a before eb101d2abdcccb514ca4fccd3b278dd8267374f6; affected f21e8cb927fa9da49490b74ddda3856a828b82d6; affected 5.15.17 before 5.15.210; affected 5.16.3 before 5.17 |
| Linux / Linux | affected 5.17; unaffected 0 before 5.17; unaffected 5.15.210 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.140 through 6.6.*; unaffected 6.12.86 through 6.12.*; unaffected 6.18.27 through 6.18.*; unaffected 7.0.4 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
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/eb101d2abdcccb514ca4fccd3b278dd8267374f6
ADP enrichment
No English description supplied.