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  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80988.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nNTB: ntb_transport: Fail TX enqueue when the QP link is down\n\nCommit f195a1a6fe41 (\"ntb: Drop packets when qp link is down\") meant to\nmake ntb_transport_tx_enqueue() drop packets submitted while the QP link\nis down, but it only returns 0 without consuming the packet. Zero means\nsuccess by this function's contract, so ntb_netdev reports NETDEV_TX_OK\nand forgets the skb: nothing queued it, nothing frees it, and it leaks,\none skb for every transmit racing a link-down.\n\nReturn -ENOLINK instead, restoring the contract that a non-zero return\nleaves the buffer owned by the caller. With the preceding patch,\nntb_netdev frees the skb on non-retryable enqueue failures and returns\nNETDEV_TX_OK, so a packet racing with link-down is dropped without leaking\nor entering a busy retry loop.",
  "id": "CVE-2026-80988",
  "modified": "2026-09-15T03:30:23.222992300Z",
  "published": "2026-09-11T19:42:46.228Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/45cc11035165918dd1f81796ea98f81ece20d361"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5eca0d899a3be661a7e2caaaa7467a6fa15d756c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/76c9ccc0c6bebfc74c0e727eda67687f5103ab06"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/873ce713fef5dde0939220f04f3484ec86a16fba"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/89177732fe1653bbfef10cf5d99bf20cf57762c2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/894e136b432da75c0352c80299807a5c4b04f167"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/96d792c65b9d5f7f9dd86a1004315db59e450c07"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e6cc541fab01099fd8efadfa4f13afdf118bf536"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80988.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80988"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "NTB: ntb_transport: Fail TX enqueue when the QP link is down"
}