CVE-2025-38391 (GCVE-0-2025-38391)

Vulnerability from cvelistv5 – Published: 2025-07-25 12:53 – Updated: 2026-05-11 21:27
VLAI
Title
usb: typec: altmodes/displayport: do not index invalid pin_assignments
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: typec: altmodes/displayport: do not index invalid pin_assignments A poorly implemented DisplayPort Alt Mode port partner can indicate that its pin assignment capabilities are greater than the maximum value, DP_PIN_ASSIGN_F. In this case, calls to pin_assignment_show will cause a BRK exception due to an out of bounds array access. Prevent for loop in pin_assignment_show from accessing invalid values in pin_assignments by adding DP_PIN_ASSIGN_MAX value in typec_dp.h and using i < DP_PIN_ASSIGN_MAX as a loop condition.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7056 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 , < c93bc959788ed9a1af7df57cb539837bdf790cee (git)
Affected: 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 , < 114a977e0f6bf278e05eade055e13fc271f69cf7 (git)
Affected: 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 , < 621d5a3ef0231ab242f2d31eecec40c38ca609c5 (git)
Affected: 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 , < 2f535517b5611b7221ed478527e4b58e29536ddf (git)
Affected: 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 , < 45e9444b3b97eaf51a5024f1fea92f44f39b50c6 (git)
Affected: 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 , < 5581e694d3a1c2f32c5a51d745c55b107644e1f8 (git)
Affected: 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 , < 47cb5d26f61d80c805d7de4106451153779297a1 (git)
Affected: 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 , < af4db5a35a4ef7a68046883bfd12468007db38f1 (git)
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Linux Linux Affected: 4.19
Unaffected: 0 , < 4.19 (semver)
Unaffected: 5.4.296 , ≤ 5.4.* (semver)
Unaffected: 5.10.240 , ≤ 5.10.* (semver)
Unaffected: 5.15.187 , ≤ 5.15.* (semver)
Unaffected: 6.1.144 , ≤ 6.1.* (semver)
Unaffected: 6.6.97 , ≤ 6.6.* (semver)
Unaffected: 6.12.37 , ≤ 6.12.* (semver)
Unaffected: 6.15.6 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
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          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: typec: altmodes/displayport: no indexar asignaciones de pines no v\u00e1lidas. Un puerto asociado DisplayPort en modo alternativo mal implementado puede indicar que su capacidad de asignaci\u00f3n de pines supera el valor m\u00e1ximo, DP_PIN_ASSIGN_F. En este caso, las llamadas a pin_assignment_show provocar\u00e1n una excepci\u00f3n BRK debido a un acceso fuera de los l\u00edmites de la matriz. Para evitar que el bucle for de pin_assignment_show acceda a valores no v\u00e1lidos en las asignaciones de pines, agregue el valor DP_PIN_ASSIGN_MAX en typec_dp.h y use i \u0026lt; DP_PIN_ASSIGN_MAX como condici\u00f3n de bucle."
          }
        ],
        "id": "CVE-2025-38391",
        "lastModified": "2026-06-17T09:16:45.837",
        "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": "2025-07-25T13:15:28.487",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/114a977e0f6bf278e05eade055e13fc271f69cf7"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/2f535517b5611b7221ed478527e4b58e29536ddf"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/45e9444b3b97eaf51a5024f1fea92f44f39b50c6"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/47cb5d26f61d80c805d7de4106451153779297a1"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/5581e694d3a1c2f32c5a51d745c55b107644e1f8"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/621d5a3ef0231ab242f2d31eecec40c38ca609c5"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/af4db5a35a4ef7a68046883bfd12468007db38f1"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/c93bc959788ed9a1af7df57cb539837bdf790cee"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-125"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T01:05:14+00:00",
      "cve": "CVE-2025-38391",
      "id": "CVE-2025-38391",
      "initial_release_date": "2025-07-25T00:00:00+00:00",
      "product_status:known_affected": "260",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: usb: typec: altmodes/displayport: do not index invalid pin_assignments",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38391.json",
      "version": "3"
    }
  }
}



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