{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "eb36bedf28be6d986bdbcfa375bab08ffa45efd8"
            },
            {
              "fixed": "a14ceebd13bf857bfca052bc5a6bd49e737912be"
            },
            {
              "fixed": "4f1c20873f70b4b22ef86dc38dad1fda8e169bcd"
            },
            {
              "fixed": "307d80193b4a4a75b8dc4e0d3162be3755abbed7"
            },
            {
              "fixed": "7a3e1481f4ee6c581bccc6bfc6c970aac5be7b0c"
            },
            {
              "fixed": "3447641d361dcc5511841d986ad4d849b2900d9b"
            },
            {
              "fixed": "b13202d401e1a20fec89b0cda733dcbaf279f79d"
            },
            {
              "fixed": "dd633280de7fdfd60dc4fcf63d04e2ad95b43269"
            },
            {
              "fixed": "452636ea5410a96e02ebaaf80b21e3620b98e0dd"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.11.0"
            },
            {
              "fixed": "5.10.266"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.217"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.183"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.152"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.104"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.45"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74623.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: atlantic: free stranded TX buffers on ring deinit\n\naq_vec_deinit() drains the TX rings with a single aq_ring_tx_clean()\ncall, which frees at most AQ_CFG_TX_CLEAN_BUDGET (256) descriptors and\nstops at hw_head, which no longer moves once aq_vec_stop() has stopped\nthe hardware and NAPI. Completed descriptors beyond the budget and\neverything still posted in [hw_head, sw_tail) keep their skb or\nxdp_frame when the interface goes down: aq_vec_ring_free() then frees\nthe buffer ring and the references are lost for good.\n\nToday this is a silent memory leak on every interface down under\nTX/XDP_TX load. With the conversion of the RX path to page_pool posted\nfor net-next it becomes much more visible: XDP_TX frames carry fragment\nreferences on the RX ring's page_pool, so a single stranded frame keeps\nthe pool's inflight count above zero forever. page_pool_destroy() then\nnever completes, the pool is leaked together with its pages, and\n\"page_pool_release_retry() stalled pool shutdown\" is warned every 60\nseconds from that point on, on every ifdown, XDP detach or ring resize\nunder XDP_TX load.\n\nBring back aq_ring_tx_deinit() as it was before the removal and use it\nfor teardown again, with one extension: TX rings can hold xdp_frames\nnowadays, so release those too. They are returned with\nxdp_return_frame() since this runs in process context.",
  "id": "CVE-2026-74623",
  "modified": "2026-08-25T03:51:27.763904978Z",
  "published": "2026-08-22T15:32:06.467Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/307d80193b4a4a75b8dc4e0d3162be3755abbed7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3447641d361dcc5511841d986ad4d849b2900d9b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/452636ea5410a96e02ebaaf80b21e3620b98e0dd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f1c20873f70b4b22ef86dc38dad1fda8e169bcd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7a3e1481f4ee6c581bccc6bfc6c970aac5be7b0c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a14ceebd13bf857bfca052bc5a6bd49e737912be"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b13202d401e1a20fec89b0cda733dcbaf279f79d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dd633280de7fdfd60dc4fcf63d04e2ad95b43269"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74623.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74623"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "net: atlantic: free stranded TX buffers on ring deinit"
}