{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-46135",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-46135"
  ],
  "published": "2026-05-28T09:36:53Z",
  "summary": "nvmet-tcp: fix race between ICReq handling and queue teardown",
  "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->state 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->state 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.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.178",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46135"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b7dd4d27aa70bd98bb10572310e913668baf6a65"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9c63cf80895a70eb4fcfcaa725bb1ac9ae76f02b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6f96dea4819d122737b217ea16660d255abbf8c6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5f0b95ef68ab9afba75b20eebf436130f80c161a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/49891c8fe0cb43fbbe480da1cdccfbbaeb820cb3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/67e1aaf93b495c2f10bc8a5fbba575fbb7f449b6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/dcfe4d1f7960e7d1c01642318f3aae1a604f8508"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5293a8882c549fab4a878bc76b0b6c951f980a61"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T13:16:28Z"
  }
}