« Volver al listado

CVE-2026-93157

Estado: RecibidaSin puntuar—

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

hwrng: xilinx-trng - propagate timeout before any data is read

xtrng_readblock32() polls for 16-byte chunks but returns the number of bytes read even when the first poll times out. Its caller then treats a zero return as a short successful read, and partial reads for full 32-byte blocks can make the tail copy use a fixed block offset rather than the amount already produced.

Return the poll error when no data has been read, preserve partial positive returns after some data is available, stop the generator on all collection exits, and append tail bytes at the current output count.

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-2026-93157",
  "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": "62219775a07ce0bd8085852f3d1e2d772bf6fdec",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8979744aca8096ee5072798dfc1181606919b35d",
              "lessThan": "bdc3b37a935f28c3e9eb2f6e889b4644d859fb08",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8979744aca8096ee5072798dfc1181606919b35d",
              "lessThan": "ba088974419326daf46c5dc03e2cf6ab6ab701f7",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/char/hw_random/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": "6.18.52",
              "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": [
            "drivers/char/hw_random/xilinx-trng.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-17T17:18:11.040",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/62219775a07ce0bd8085852f3d1e2d772bf6fdec",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ba088974419326daf46c5dc03e2cf6ab6ab701f7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bdc3b37a935f28c3e9eb2f6e889b4644d859fb08",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwrng: xilinx-trng - propagate timeout before any data is read\n\nxtrng_readblock32() polls for 16-byte chunks but returns the number of\nbytes read even when the first poll times out. Its caller then treats a\nzero return as a short successful read, and partial reads for full\n32-byte blocks can make the tail copy use a fixed block offset rather\nthan the amount already produced.\n\nReturn the poll error when no data has been read, preserve partial\npositive returns after some data is available, stop the generator on all\ncollection exits, and append tail bytes at the current output count."
    }
  ],
  "lastModified": "2026-09-17T17:18:11.040",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}