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CVE-2025-21800

Estado: AnalizadaAlta (7.8)—

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

net/mlx5: HWS, fix definer's HWS_SET32 macro for negative offset

Detalles técnicos trazas, registros y código del informe original
When bit offset for HWS_SET32 macro is negative,
UBSAN complains about the shift-out-of-bounds:

  UBSAN: shift-out-of-bounds in
  drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c:177:2
  shift exponent -8 is negative

CVSS

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad local (AV:L, PR:L) en driver Mellanox sin interacción. UBSAN detecta desbordamiento de desplazamiento que podría causar DoS del kernel o escalada de privilegios local. Impacto potencial de disponibilidad por crash del kernel.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramFilter Network TrafficExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-21800",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "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": "74a778b4a63faef9ff02aad0d332b209835f93e1",
              "lessThan": "92cff996624c4757d5bbace3dfa3f1567ba94143",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "74a778b4a63faef9ff02aad0d332b209835f93e1",
              "lessThan": "69c676c0ded472713e6d1b3a456b3c4f52f66f0e",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "be482f1d10da781db9445d2753c1e3f1fd82babf",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.12",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.13",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.13.2",
              "versionType": "semver",
              "lessThanOrEqual": "6.13.*"
            },
            {
              "status": "unaffected",
              "version": "6.14",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-02-27T20:16:02.660",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/69c676c0ded472713e6d1b3a456b3c4f52f66f0e",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/92cff996624c4757d5bbace3dfa3f1567ba94143",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/be482f1d10da781db9445d2753c1e3f1fd82babf",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: HWS, fix definer's HWS_SET32 macro for negative offset\n\nWhen bit offset for HWS_SET32 macro is negative,\nUBSAN complains about the shift-out-of-bounds:\n\n  UBSAN: shift-out-of-bounds in\n  drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c:177:2\n  shift exponent -8 is negative"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/mlx5: HWS, corrige la macro HWS_SET32 del definidor para desplazamiento negativo Cuando el desplazamiento de bits para la macro HWS_SET32 es negativo, UBSAN se queja del desplazamiento fuera de los límites: UBSAN: desplazamiento fuera de los límites en drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c:177:2 el exponente de desplazamiento -8 es negativo"
    }
  ],
  "lastModified": "2026-06-17T08:44:18.730",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8507AA00-C52F-4231-94AC-4D0374F5A9F5",
              "versionEndExcluding": "6.12.13",
              "versionStartIncluding": "6.12"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6D4116B1-1BFD-4F23-BA84-169CC05FC5A3",
              "versionEndExcluding": "6.13.2",
              "versionStartIncluding": "6.13"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}