{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-23298",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-23298"
  ],
  "published": "2026-03-25T10:28:03Z",
  "summary": "can: ucan: Fix infinite loop from zero-length messages",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: ucan: Fix infinite loop from zero-length messages\n\nIf a broken ucan device gets a message with the message length field set\nto 0, then the driver will loop for forever in\nucan_read_bulk_callback(), hanging the system.  If the length is 0, just\nskip the message and go on to the next one.\n\nThis has been fixed in the kvaser_usb driver in the past in commit\n0c73772cd2b8 (\"can: kvaser_usb: leaf: Fix potential infinite loop in\ncommand parsers\"), so there must be some broken devices out there like\nthis somewhere.",
  "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": "6.1.167",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23298"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ca07d3c6eef14d34e6fdeefe55058db045be29dc"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e7bb6e0606b5f233531aaaad9542d69fbb792115"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ab6f075492d37368b4c7b0df7f7fdc2b666887fc"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/13b646eec3ba1131180803f5aaf1fee23540ad8f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/bd85f21a6219aeae4389d700c54f1799f4b814e0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/aa9e0a7fe5efc2f74327fd37d828e9a51d9ff588"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c7bc62be6c1a60bb21301692009590b1ffda91d9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1e446fd0582ad8be9f6dafb115fc2e7245f9bea7"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}