{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-40126",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-40126"
  ],
  "published": "2025-11-12T10:24:04Z",
  "summary": "sparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC\n\nThe referenced commit introduced exception handlers on user-space memory\nreferences in copy_from_user and copy_to_user. These handlers return from\nthe respective function and calculate the remaining bytes left to copy\nusing the current register contents. This commit fixes a couple of bad\ncalculations. This will fix the return value of copy_from_user and\ncopy_to_user in the faulting case. The behaviour of memcpy stays unchanged.",
  "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-2025-40126"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0bf3dc3a2156f1c5ddaba4b85d09767874634114"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/41c18baee66134e6ef786eb075c1b6adb22432b0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/59424dc0d0e044b2eb007686a4724ddd91d57db5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9b137f277cc3297044aabd950f589e505d30104c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/674ff598148a28bae0b5372339de56f2abf0b1d1"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7de3a75bbc8465d816336c74d50109e73501efab"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/57c278500fce3cd4e1c540700c0b05426a958393"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4fba1713001195e59cfc001ff1f2837dab877efb"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-24T06:48:58Z"
  }
}