{"apiVersion":"1.0","identifier":"CVE-2026-74623","description":"In the Linux kernel, the following vulnerability has been resolved: net: atlantic: free stranded TX buffers on ring deinit aq_vec_deinit() drains the TX rings with a single aq_ring_tx_clean() call, which frees at most AQ_CFG_TX_CLEAN_BUDGET (256) descriptors and stops at hw_head, which no longer moves once aq_vec_stop() has stopped the hardware and NAPI. Completed descriptors beyond the budget and everything still posted in [hw_head, sw_tail) keep their skb or xdp_frame when the interface goes down: aq_vec_ring_free() then frees the buffer ring and the references are lost for good. Today this is a silent memory leak on every interface down under TX/XDP_TX load. With the conversion of the RX path to page_pool posted for net-next it becomes much more visible: XDP_TX frames carry fragment references on the RX ring-s page_pool, so a single stranded frame keeps the pool-s inflight count above zero forever. page_pool_destroy() then never completes, the pool is leaked together with its pages, and -page_pool_release_retry() stalled pool shutdown- is warned every 60 seconds from that point on, on every ifdown, XDP detach or ring resize under XDP_TX load. Bring back aq_ring_tx_deinit() as it was before the removal and use it for teardown again, with one extension: TX rings can hold xdp_frames nowadays, so release those too. They are returned with xdp_return_frame() since this runs in process context.","publishedAt":"2026-08-22T16:16:35","lastModifiedAt":"2026-08-23T13:16:47","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74623","cvssScore":null,"cvssVector":"Pending","epssProbability":0.00177,"riskScore":0,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74623","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74623","en":"https://www.redsauce.net/en/cves/CVE-2026-74623","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74623","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74623","de":"https://www.redsauce.net/de/cves/CVE-2026-74623","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74623","el":"https://www.redsauce.net/el/cves/CVE-2026-74623"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74623"}}