CVE-2025-37927 (GCVE-0-2025-37927)

Vulnerability from cvelistv5 – Published: 2025-05-20 15:21 – Updated: 2026-05-11 21:17
VLAI
Title
iommu/amd: Fix potential buffer overflow in parse_ivrs_acpihid
Summary
In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix potential buffer overflow in parse_ivrs_acpihid There is a string parsing logic error which can lead to an overflow of hid or uid buffers. Comparing ACPIID_LEN against a total string length doesn't take into account the lengths of individual hid and uid buffers so the check is insufficient in some cases. For example if the length of hid string is 4 and the length of the uid string is 260, the length of str will be equal to ACPIID_LEN + 1 but uid string will overflow uid buffer which size is 256. The same applies to the hid string with length 13 and uid string with length 250. Check the length of hid and uid strings separately to prevent buffer overflow. Found by Linux Verification Center (linuxtesting.org) with SVACE.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6639 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ca3bf5d47cec8b7614bcb2e9132c40081d6d81db , < 2b65060c84ee4d8dc64fae6d2728b528e9e832e1 (git)
Affected: ca3bf5d47cec8b7614bcb2e9132c40081d6d81db , < a65ebfed65fa62797ec1f5f1dcf7adb157a2de1e (git)
Affected: ca3bf5d47cec8b7614bcb2e9132c40081d6d81db , < 466d9da267079a8d3b69fa72dfa3a732e1f6dbb5 (git)
Affected: ca3bf5d47cec8b7614bcb2e9132c40081d6d81db , < c3f37faa71f5d26dd2144b3f2b14525ec8f5e41f (git)
Affected: ca3bf5d47cec8b7614bcb2e9132c40081d6d81db , < 13d67528e1ae4486e9ab24b70122fab104c73c29 (git)
Affected: ca3bf5d47cec8b7614bcb2e9132c40081d6d81db , < 10d901a95f8e766e5aa0bb9a983fb41271f64718 (git)
Affected: ca3bf5d47cec8b7614bcb2e9132c40081d6d81db , < c8bdfc0297965bb13fa439d36ca9c4f7c8447f0f (git)
Affected: ca3bf5d47cec8b7614bcb2e9132c40081d6d81db , < 8dee308e4c01dea48fc104d37f92d5b58c50b96c (git)
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Linux Linux Affected: 4.7
Unaffected: 0 , < 4.7 (semver)
Unaffected: 5.4.294 , ≤ 5.4.* (semver)
Unaffected: 5.10.238 , ≤ 5.10.* (semver)
Unaffected: 5.15.182 , ≤ 5.15.* (semver)
Unaffected: 6.1.138 , ≤ 6.1.* (semver)
Unaffected: 6.6.90 , ≤ 6.6.* (semver)
Unaffected: 6.12.28 , ≤ 6.12.* (semver)
Unaffected: 6.14.6 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
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          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommu/amd: Arreglar desbordamiento de b\u00fafer potencial en parse_ivrs_acpihid Hay un error de l\u00f3gica de an\u00e1lisis de cadenas que puede provocar un desbordamiento de los b\u00faferes hid o uid. La comparaci\u00f3n de ACPIID_LEN con la longitud total de una cadena no tiene en cuenta las longitudes de los b\u00faferes hid y uid individuales, por lo que la comprobaci\u00f3n es insuficiente en algunos casos. Por ejemplo, si la longitud de la cadena hid es 4 y la longitud de la cadena uid es 260, la longitud de str ser\u00e1 igual a ACPIID_LEN + 1, pero la cadena uid desbordar\u00e1 el b\u00fafer uid, cuyo tama\u00f1o es 256. Lo mismo se aplica a la cadena hid con una longitud de 13 y a la cadena uid con una longitud de 250. Compruebe la longitud de las cadenas hid y uid por separado para evitar el desbordamiento del b\u00fafer. Encontrado por el Centro de verificaci\u00f3n de Linux (linuxtesting.org) con SVACE."
          }
        ],
        "id": "CVE-2025-37927",
        "lastModified": "2026-06-17T09:15:42.820",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-05-20T16:15:29.240",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/10d901a95f8e766e5aa0bb9a983fb41271f64718"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/13d67528e1ae4486e9ab24b70122fab104c73c29"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/2b65060c84ee4d8dc64fae6d2728b528e9e832e1"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/466d9da267079a8d3b69fa72dfa3a732e1f6dbb5"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/8dee308e4c01dea48fc104d37f92d5b58c50b96c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/a65ebfed65fa62797ec1f5f1dcf7adb157a2de1e"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/c3f37faa71f5d26dd2144b3f2b14525ec8f5e41f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/c8bdfc0297965bb13fa439d36ca9c4f7c8447f0f"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-787"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-11-05T14:37:03+00:00",
      "cve": "CVE-2025-37927",
      "id": "CVE-2025-37927",
      "initial_release_date": "2025-05-20T00:00:00+00:00",
      "product_status:known_not_affected": "200",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel: `iommu/amd`: Buffer overflow in `parse_ivrs_acpihid`",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-37927.json",
      "version": "3"
    }
  }
}



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Sightings

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Nomenclature

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