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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
617339466fda09916c4b4151fa5e6a9c1fdae353 to < 959c13da6c36167ce1016d400a6104d2367f686eaffected24f5e38a13b5ae2b6105cda8bb47c19108e62a9a to < 3b89b4c095804c478d50376285e66700cf3c045faffected24f5e38a13b5ae2b6105cda8bb47c19108e62a9a to < cc9b6303e7ea91bc360b42c7edc1fe9ceb2f47feaffected24f5e38a13b5ae2b6105cda8bb47c19108e62a9a to < 6c53d68e3bcfc8faccdd76c3383a9232b05c9ae6affected24f5e38a13b5ae2b6105cda8bb47c19108e62a9a to < 000134a20bbf89b1152520a2eef71f91fdb83a5baffected24f5e38a13b5ae2b6105cda8bb47c19108e62a9a to < 3bbbb56204f7359ce2139a9341b43b52a186261caffected24f5e38a13b5ae2b6105cda8bb47c19108e62a9a to < eb101d2abdcccb514ca4fccd3b278dd8267374f6affectedf21e8cb927fa9da49490b74ddda3856a828b82d6affected5.15.17 to < 5.15.210affected5.16.3 to < 5.17affected
Linux Linux
Default version status: affected
5.17affected0 to < 5.17unaffected5.15.210 to ≤ 5.15.*unaffected6.1.175 to ≤ 6.1.*unaffected6.6.140 to ≤ 6.6.*unaffected6.12.86 to ≤ 6.12.*unaffected6.18.27 to ≤ 6.18.*unaffected7.0.4 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
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 ↗
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html ↗