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CVE-2021-47073 is an improper lifecycle-state handling flaw in the Linux kernel platform/x86 Dell SMBIOS WMI support. Driver initialization registers the Dell SMBIOS WMI driver only when the Dell WMI interface is supported, but the module exit routine unregisters the driver unconditionally. Removing the dell_smbios module on a system where registration did not occur triggers an unexpected driver-unregister warning and kernel oops. The fix makes unregistration conditional on the same Dell WMI support condition used for registration.
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An oops condition in the Linux kernel dell-smbios-wmi driver when removing the dell_smbios module.
Linux kernel Dell SMBIOS WMI module-removal flaw causing an oops.
Linux kernel Dell SMBIOS WMI module flaw that can cause an oops when unloading dell_smbios.
Linux kernel Dell SMBIOS WMI driver flaw that can cause an oops during module removal.
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Cross-references every affected SKU, including bundled OEM variants.
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