fkie_cve-2025-38080
Vulnerability from fkie_nvd
Published
2025-06-18 10:15
Modified
2025-11-14 20:18
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Increase block_sequence array size [Why] It's possible to generate more than 50 steps in hwss_build_fast_sequence, for example with a 6-pipe asic where all pipes are in one MPC chain. This overflows the block_sequence buffer and corrupts block_sequence_steps, causing a crash. [How] Expand block_sequence to 100 items. A naive upper bound on the possible number of steps for a 6-pipe asic, ignoring the potential for steps to be mutually exclusive, is 91 with current code, therefore 100 is sufficient.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3a7810c212bcf2f722671dadf4b23ff70a7d23eePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bf1666072e7482317cf2302621766482a21a62c7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/de67e80ab48f1f23663831007a2fa3c1471a7757Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e55c5704b12eeea27e212bfab8f7e51ad3e8ac1fPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "CE0D2A5C-54AB-4F39-8991-7AC94FB5B780",
              "versionEndExcluding": "6.6.93",
              "versionStartIncluding": "4.15",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1AE98841-5774-4B45-A81C-2D188DB7E5C3",
              "versionEndExcluding": "6.12.31",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A9B72DD1-715C-4101-A720-1C8D70044C06",
              "versionEndExcluding": "6.14.9",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Increase block_sequence array size\n\n[Why]\nIt\u0027s possible to generate more than 50 steps in hwss_build_fast_sequence,\nfor example with a 6-pipe asic where all pipes are in one MPC chain. This\noverflows the block_sequence buffer and corrupts block_sequence_steps,\ncausing a crash.\n\n[How]\nExpand block_sequence to 100 items. A naive upper bound on the possible\nnumber of steps for a 6-pipe asic, ignoring the potential for steps to be\nmutually exclusive, is 91 with current code, therefore 100 is sufficient."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: Aumentar el tama\u00f1o de la matriz block_sequence [Por qu\u00e9] Es posible generar m\u00e1s de 50 pasos en hwss_build_fast_sequence, por ejemplo, con un ASIC de 6 tuber\u00edas donde todas las tuber\u00edas est\u00e1n en una cadena MPC. Esto desborda el b\u00fafer block_sequence y corrompe block_sequence_steps, lo que provoca un fallo. [C\u00f3mo] Ampliar block_sequence a 100 elementos. Un l\u00edmite superior simple para el n\u00famero posible de pasos para un ASIC de 6 tuber\u00edas, ignorando la posibilidad de que los pasos sean mutuamente excluyentes, es 91 con el c\u00f3digo actual; por lo tanto, 100 es suficiente."
    }
  ],
  "id": "CVE-2025-38080",
  "lastModified": "2025-11-14T20:18:20.680",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-06-18T10:15:41.647",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3a7810c212bcf2f722671dadf4b23ff70a7d23ee"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/de67e80ab48f1f23663831007a2fa3c1471a7757"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/e55c5704b12eeea27e212bfab8f7e51ad3e8ac1f"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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