CVE-2026-80871

Estado: RecibidaSin puntuar—

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

crypto: xilinx-trng - Remove crypto_rng interface

Implementing the crypto_rng interface has no purpose, as it isn't used in practice. It's being removed from other drivers too. Just remove it. This leaves hwrng, which is actually used.

Tagging with 'Cc stable' due to the bugs that this removes:

Detalles técnicos trazas, registros y código del informe original

  - xtrng_trng_generate() sometimes returned success even when it didn't
    fill in all the bytes.

  - It was possible for xtrng_trng_generate() and
    xtrng_hwrng_trng_read() to run concurrently and interfere with each
    other, as the locking code in xtrng_hwrng_trng_read() was broken.

CVSS

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

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.21%
Percentil entre todas las CVEs puntuadas: 10
Fecha de la puntuación: 5/10/2026

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 Kernel^AI

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-80871",
  "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": "8979744aca8096ee5072798dfc1181606919b35d",
              "lessThan": "83f29da85dc9d9a32fe62cd1055e8e6705e6bf80",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8979744aca8096ee5072798dfc1181606919b35d",
              "lessThan": "9634db561e1594c151923f4950c012161c545c93",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8979744aca8096ee5072798dfc1181606919b35d",
              "lessThan": "32b4d29280ed2a991dc196d5845b892acedc63b8",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/crypto/Kconfig",
            "drivers/crypto/xilinx/xilinx-trng.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.18",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/crypto/Kconfig",
            "drivers/crypto/xilinx/xilinx-trng.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-04T17:16:59.027",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/32b4d29280ed2a991dc196d5845b892acedc63b8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/83f29da85dc9d9a32fe62cd1055e8e6705e6bf80",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9634db561e1594c151923f4950c012161c545c93",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: xilinx-trng - Remove crypto_rng interface\n\nImplementing the crypto_rng interface has no purpose, as it isn't used\nin practice.  It's being removed from other drivers too.  Just remove\nit.  This leaves hwrng, which is actually used.\n\nTagging with 'Cc stable' due to the bugs that this removes:\n\n  - xtrng_trng_generate() sometimes returned success even when it didn't\n    fill in all the bytes.\n\n  - It was possible for xtrng_trng_generate() and\n    xtrng_hwrng_trng_read() to run concurrently and interfere with each\n    other, as the locking code in xtrng_hwrng_trng_read() was broken."
    }
  ],
  "lastModified": "2026-09-04T17:16:59.027",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}