« Volver al listado

CVE-2026-90327

Estado: RecibidaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

phonet: pep: do not write beyond optlen in getsockopt

pep_getsockopt() clamps the reported length to the caller's buffer with min_t(), but then stores the value with put_user(val, (int __user *) optval), which always writes sizeof(int) bytes. A getsockopt() call with an optlen smaller than sizeof(int) thus reports the clamped length yet writes a full int, one to three bytes past the user buffer.

Write the value with copy_to_user() bounded by len, so at most optlen bytes are copied, matching the length reported back to userspace.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-90327",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a",
              "lessThan": "6054fed6bad08b6d03973e8ffca7f0c9394d1c30",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a",
              "lessThan": "eac733a0b6fe0a52d91f9f623425735ed50ac6c2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a",
              "lessThan": "95e0ed2439dd1792eb454c68ae8d10f30ffe3bff",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a",
              "lessThan": "056eea1a2068ad2fb7c3093c5f1095268f87d0c7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a",
              "lessThan": "1bf499e438da80455e258049bce60ffb3a53f3fa",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a",
              "lessThan": "c4487e4d5309de587479ecc2f5173b49586f46f4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a",
              "lessThan": "f97022fefe6eb06ee18549d603420440f2959802",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "02a47617cdce440f60c71a51f3a93f9f5fcc5a7a",
              "lessThan": "77e5eb0e192aec6710c03ca8144582fd2af36ca4",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/phonet/pep.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.28"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "2.6.28",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "net/phonet/pep.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-17T17:17:30.800",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/056eea1a2068ad2fb7c3093c5f1095268f87d0c7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1bf499e438da80455e258049bce60ffb3a53f3fa",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6054fed6bad08b6d03973e8ffca7f0c9394d1c30",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/77e5eb0e192aec6710c03ca8144582fd2af36ca4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/95e0ed2439dd1792eb454c68ae8d10f30ffe3bff",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c4487e4d5309de587479ecc2f5173b49586f46f4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/eac733a0b6fe0a52d91f9f623425735ed50ac6c2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f97022fefe6eb06ee18549d603420440f2959802",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphonet: pep: do not write beyond optlen in getsockopt\n\npep_getsockopt() clamps the reported length to the caller's buffer with\nmin_t(), but then stores the value with put_user(val, (int __user *)\noptval), which always writes sizeof(int) bytes. A getsockopt() call with\nan optlen smaller than sizeof(int) thus reports the clamped length yet\nwrites a full int, one to three bytes past the user buffer.\n\nWrite the value with copy_to_user() bounded by len, so at most optlen\nbytes are copied, matching the length reported back to userspace."
    }
  ],
  "lastModified": "2026-09-17T17:17:30.800",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}