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CVE-2025-21828 is a flaw in the Linux kernel mac80211 Wi-Fi subsystem's station cleanup path. In scenarios where a station is transitioned to the AUTHORIZED state before insertion, such as IBSS/ad-hoc operation, station insertion can fail and cause the station to be freed before it has been uploaded to the wireless driver. The cleanup logic could subsequently attempt to flush that non-uploaded station through the driver, despite the driver never having received it. The correction verifies that the station was uploaded to the driver before attempting the flush.
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Linux kernel mac80211 station-handling flaw.
A Linux kernel mac80211 Wi-Fi subsystem flaw in which a station that failed insertion can be freed before being uploaded to the driver; subsequently attempting to flush that non-uploaded station can cause an unexpected driver operation and potential crash.
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Cross-references every affected SKU, including bundled OEM variants.
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