mtd: rawnand: fsl_upm: Fix an off-by one test in fun_exec_op()

{
  "id": "75eacc4e39e305637ec73d77ec984837392055754100e02448e30819b71cc0e7",
  "url": "https://osv.dev/vulnerability/CVE-2023-54104",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "mtd: rawnand: fsl_upm: Fix an off-by one test in fun_exec_op()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: fsl_upm: Fix an off-by one test in fun_exec_op() 'op-cs' is copied in 'fun->mchip_number' which is used to access the 'mchip_offsets' and the 'rnb_gpio' arrays. These arrays have NAND_MAX_CHIPS elements, so the index must be below this limit. Fix the sanity check in order to avoid the NAND_MAX_CHIPS value. This would lead to out-of-bound accesses.",
    "evidence": "osv:CVE-2023-54104",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.190",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.126",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.45",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.4.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2023-54104",
      "aliases": [
        "CVE-2023-54104"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "54309d65776755bcdb9dcf3744cd764fc1e254ea"
                },
                {
                  "fixed": "1f09d67d390647f83f8f9d26382b0daa43756e6f"
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                  "fixed": "eb7a5e4d14c8659cb97db6863316280e15f67209"
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                  "fixed": "f4b700c71802c81e6f9dce362ee7a0312c8377ba"
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                  "fixed": "49e57caf967a969f6b955c88805f2d160910aa12"
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                  "fixed": "c6abce60338aa2080973cd95be0aedad528bb41f"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54104.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.9.0"
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                  "fixed": "5.10.190"
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            {
              "type": "ECOSYSTEM",
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                {
                  "fixed": "6.1.45"
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            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.2.0"
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54104.json"
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        }
      ],
      "modified": "2026-10-28T02:30:21.364845114Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1f09d67d390647f83f8f9d26382b0daa43756e6f",
        "https://git.kernel.org/stable/c/49e57caf967a969f6b955c88805f2d160910aa12",
        "https://git.kernel.org/stable/c/c6abce60338aa2080973cd95be0aedad528bb41f",
        "https://git.kernel.org/stable/c/eb7a5e4d14c8659cb97db6863316280e15f67209",
        "https://git.kernel.org/stable/c/f4b700c71802c81e6f9dce362ee7a0312c8377ba",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54104.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-54104",
        "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/2023/54xxx/CVE-2023-54104.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-54104",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 487739,
  "published_at": "2025-12-24T13:06:29.354+00:00"
}