{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-40056",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-40056"
  ],
  "published": "2025-10-28T11:50:45Z",
  "summary": "vhost: vringh: Fix copy_to_iter return value check",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvhost: vringh: Fix copy_to_iter return value check\n\nThe return value of copy_to_iter can't be negative, check whether the\ncopied length is equal to the requested length instead of checking for\nnegative values.",
  "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": "6.1.156",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-40056"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/bd71e7e0a612740e4de5524880c7cd40293af5f7"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/781226e11d5bdea0d69c7b5aa3cda874093c73b8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b3a950d236e98440c07405ba597b11bce56a8050"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/68aac2b335d474b938d154b9c95cbc58838cb2ce"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/439263376c2c4e126cac0d07e4987568de4eaba5"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}