{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "872d26a391da92ed8f0c0f5cb5fef428067b7f30"
            },
            {
              "fixed": "5f0b95ef68ab9afba75b20eebf436130f80c161a"
            },
            {
              "fixed": "49891c8fe0cb43fbbe480da1cdccfbbaeb820cb3"
            },
            {
              "fixed": "67e1aaf93b495c2f10bc8a5fbba575fbb7f449b6"
            },
            {
              "fixed": "dcfe4d1f7960e7d1c01642318f3aae1a604f8508"
            },
            {
              "fixed": "5293a8882c549fab4a878bc76b0b6c951f980a61"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.0.0"
            },
            {
              "fixed": "6.6.144"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.88"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.30"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46135.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-tcp: fix race between ICReq handling and queue teardown\n\nnvmet_tcp_handle_icreq() updates queue-\u003estate after sending an\nInitialization Connection Response (ICResp), but it does so without\nserializing against target-side queue teardown.\n\nIf an NVMe/TCP host sends an Initialization Connection Request\n(ICReq) and immediately closes the connection, target-side teardown\nmay start in softirq context before io_work drains the already\nbuffered ICReq. In that case, nvmet_tcp_schedule_release_queue()\nsets queue-\u003estate to NVMET_TCP_Q_DISCONNECTING and drops the queue\nreference under state_lock.\n\nIf io_work later processes that ICReq, nvmet_tcp_handle_icreq() can\nstill overwrite the state back to NVMET_TCP_Q_LIVE. That defeats the\nDISCONNECTING-state guard in nvmet_tcp_schedule_release_queue() and\nallows a later socket state change to re-enter teardown and issue a\nsecond kref_put() on an already released queue.\n\nThe ICResp send failure path has the same problem. If teardown has\nalready moved the queue to DISCONNECTING, a send error can still\noverwrite the state with NVMET_TCP_Q_FAILED, again reopening the\nwindow for a second teardown path to drop the queue reference.\n\nFix this by serializing both post-send state transitions with\nstate_lock and bailing out if teardown has already started.\n\nUse -ESHUTDOWN as an internal sentinel for that bail-out path rather\nthan propagating it as a transport error like -ECONNRESET. Keep\nnvmet_tcp_socket_error() setting rcv_state to NVMET_TCP_RECV_ERR before\nhonoring that sentinel so receive-side parsing stays quiesced until the\nexisting release path completes.",
  "id": "CVE-2026-46135",
  "modified": "2026-07-08T05:39:03.791883362Z",
  "published": "2026-05-28T09:35:49.828Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49891c8fe0cb43fbbe480da1cdccfbbaeb820cb3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5293a8882c549fab4a878bc76b0b6c951f980a61"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f0b95ef68ab9afba75b20eebf436130f80c161a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/67e1aaf93b495c2f10bc8a5fbba575fbb7f449b6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dcfe4d1f7960e7d1c01642318f3aae1a604f8508"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46135.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46135"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "nvmet-tcp: fix race between ICReq handling and queue teardown"
}