In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: disable rx napi when removing device Unloading the mt7915e… (CVE-2026-98957)

The Linux kernel mt7915 WiFi driver did not disable the receive NAPI before device removal, causing warnings in __netif_napi_del_locked() and page_pool_disable_direct_recycling() when unloading the mt7915e module on MT7916 devices. This led to system instability after reinserting the module, which is necessary to change the enable_6ghz parameter. The fix involves disabling rx NAPI inside the mt7915e driver itself in the mt7915_stop_hardware() function, ensuring it is disabled timely to prevent access to freed structures. The tx side remains managed by the mt76 generic code.

The vulnerability caused system instability and multiple kernel warnings when unloading and reloading the mt7915e module on MT7916 devices. This instability could disrupt normal operation, especially when changing frequency parameters requiring module reload. There is no indication of remote code execution or privilege escalation from the provided data.

A fix is available that disables the receive NAPI properly within the mt7915e driver during device removal. Users should update to a Linux kernel version that includes this fix. No additional mitigation actions are indicated.