ALSA: firewire-motu: add bounds check in put_user loop for DSP events

{
  "id": "bb703b3acf62d34806ebc67dc95b141bbfb72cb2dd579077530a3a35f7b30e01",
  "url": "https://osv.dev/vulnerability/CVE-2025-68753",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ALSA: firewire-motu: add bounds check in put_user loop for DSP events",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ALSA: firewire-motu: add bounds check in put_user loop for DSP events In the DSP event handling code, a put_user() loop copies event data. When the user buffer size is not aligned to 4 bytes, it could overwrite beyond the buffer boundary. Fix by adding a bounds check before put_user().",
    "evidence": "osv:CVE-2025-68753",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.160",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.120",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.63",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.17.13",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-68753",
      "aliases": [
        "CVE-2025-68753"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
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                {
                  "fixed": "ea2c921d9de6e32ca50cb817b9d57bb881be70de"
                },
                {
                  "fixed": "6d4f17782ce4facf3197e79707df411ee3d7b30a"
                },
                {
                  "fixed": "0d71b3c2ed742f1ccb3b0b7a61afb90c0251093f"
                },
                {
                  "fixed": "df692cf2b601a54b34edfdb9e683d67483aa8ce1"
                },
                {
                  "fixed": "8f9e51cf2a2a43d0cd72d3dc0b5ccea3f639c187"
                },
                {
                  "fixed": "298e753880b6ea99ac30df34959a7a03b0878eed"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68753.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
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                {
                  "fixed": "6.1.160"
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              ]
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            {
              "type": "ECOSYSTEM",
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                  "introduced": "6.2.0"
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                  "fixed": "6.6.120"
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            {
              "type": "ECOSYSTEM",
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                  "introduced": "6.7.0"
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              "type": "ECOSYSTEM",
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                  "introduced": "6.13.0"
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            {
              "type": "ECOSYSTEM",
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                {
                  "introduced": "6.18.0"
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                {
                  "fixed": "6.18.2"
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              ]
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68753.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:53.104469351Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0d71b3c2ed742f1ccb3b0b7a61afb90c0251093f",
        "https://git.kernel.org/stable/c/298e753880b6ea99ac30df34959a7a03b0878eed",
        "https://git.kernel.org/stable/c/6d4f17782ce4facf3197e79707df411ee3d7b30a",
        "https://git.kernel.org/stable/c/8f9e51cf2a2a43d0cd72d3dc0b5ccea3f639c187",
        "https://git.kernel.org/stable/c/df692cf2b601a54b34edfdb9e683d67483aa8ce1",
        "https://git.kernel.org/stable/c/ea2c921d9de6e32ca50cb817b9d57bb881be70de",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68753.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-68753",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68753.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-68753",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521940,
  "published_at": "2026-01-05T09:32:27.029+00:00"
}