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CVE-2026-80571

Estado: RecibidaSin puntuar—

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

powerpc/pseries: papr-phy-attest - validate cmd.length, plug mem leak

In papr_phy_attest_create_handle(), the params->cmd.length is not validated before use, which can result in a buffer overlow. Check it and return -EINVAL if it is either 0 or exceeds sizeof(params->cmd).

Also, params is freed on the success path but not error. Free it on errors after memory allocation. And free it on negative fd.

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-2026-80571",
  "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": "86900ab620a42396a749b506d4a187820fc3fabe",
              "lessThan": "828a8d1a9107aec6353d896882df8383accf7e80",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "86900ab620a42396a749b506d4a187820fc3fabe",
              "lessThan": "ed98ce338f9a65c90cb930b088f1eb36de7181af",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "86900ab620a42396a749b506d4a187820fc3fabe",
              "lessThan": "5b17f3f34391372faf03e79d947e0c50ab6dd258",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "arch/powerpc/platforms/pseries/papr-phy-attest.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.16",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.18.46",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.10",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "arch/powerpc/platforms/pseries/papr-phy-attest.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-26T15:17:13.020",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/5b17f3f34391372faf03e79d947e0c50ab6dd258",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/828a8d1a9107aec6353d896882df8383accf7e80",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ed98ce338f9a65c90cb930b088f1eb36de7181af",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/pseries: papr-phy-attest - validate cmd.length, plug mem leak\n\nIn papr_phy_attest_create_handle(), the params->cmd.length is not\nvalidated before use, which can result in a buffer overlow.  Check it and\nreturn -EINVAL if it is either 0 or exceeds sizeof(params->cmd).\n\nAlso, params is freed on the success path but not error. Free it on\nerrors after memory allocation.  And free it on negative fd."
    }
  ],
  "lastModified": "2026-08-26T15:17:13.020",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}