CVE-2026-74623

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net: atlantic: free stranded TX buffers on ring deinit<br /> <br /> aq_vec_deinit() drains the TX rings with a single aq_ring_tx_clean()<br /> call, which frees at most AQ_CFG_TX_CLEAN_BUDGET (256) descriptors and<br /> stops at hw_head, which no longer moves once aq_vec_stop() has stopped<br /> the hardware and NAPI. Completed descriptors beyond the budget and<br /> everything still posted in [hw_head, sw_tail) keep their skb or<br /> xdp_frame when the interface goes down: aq_vec_ring_free() then frees<br /> the buffer ring and the references are lost for good.<br /> <br /> Today this is a silent memory leak on every interface down under<br /> TX/XDP_TX load. With the conversion of the RX path to page_pool posted<br /> for net-next it becomes much more visible: XDP_TX frames carry fragment<br /> references on the RX ring&amp;#39;s page_pool, so a single stranded frame keeps<br /> the pool&amp;#39;s inflight count above zero forever. page_pool_destroy() then<br /> never completes, the pool is leaked together with its pages, and<br /> "page_pool_release_retry() stalled pool shutdown" is warned every 60<br /> seconds from that point on, on every ifdown, XDP detach or ring resize<br /> under XDP_TX load.<br /> <br /> Bring back aq_ring_tx_deinit() as it was before the removal and use it<br /> for teardown again, with one extension: TX rings can hold xdp_frames<br /> nowadays, so release those too. They are returned with<br /> xdp_return_frame() since this runs in process context.