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CVE-2025-40175

Estado: AplazadaSin puntuar—

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

idpf: cleanup remaining SKBs in PTP flows

When the driver requests Tx timestamp value, one of the first steps is to clone SKB using skb_get. It increases the reference counter for that SKB to prevent unexpected freeing by another component. However, there may be a case where the index is requested, SKB is assigned and never consumed by PTP flows - for example due to reset during running PTP apps.

Add a check in release timestamping function to verify if the SKB assigned to Tx timestamp latch was freed, and release remaining SKBs.

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)

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{
  "id": "CVE-2025-40175",
  "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": "4901e83a94ef0a8baf27916f31daf59b0a68547f",
              "lessThan": "2c84e91ef831d4fedb0b94670b3cfd1cc5f966a5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4901e83a94ef0a8baf27916f31daf59b0a68547f",
              "lessThan": "a3f8c0a273120fd2638f03403e786c3de2382e72",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/intel/idpf/idpf_ptp.c",
            "drivers/net/ethernet/intel/idpf/idpf_virtchnl_ptp.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": "6.17.5",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/intel/idpf/idpf_ptp.c",
            "drivers/net/ethernet/intel/idpf/idpf_virtchnl_ptp.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-11-12T11:15:48.020",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2c84e91ef831d4fedb0b94670b3cfd1cc5f966a5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a3f8c0a273120fd2638f03403e786c3de2382e72",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nidpf: cleanup remaining SKBs in PTP flows\n\nWhen the driver requests Tx timestamp value, one of the first steps is\nto clone SKB using skb_get. It increases the reference counter for that\nSKB to prevent unexpected freeing by another component.\nHowever, there may be a case where the index is requested, SKB is\nassigned and never consumed by PTP flows - for example due to reset during\nrunning PTP apps.\n\nAdd a check in release timestamping function to verify if the SKB\nassigned to Tx timestamp latch was freed, and release remaining SKBs."
    }
  ],
  "lastModified": "2026-06-17T09:21:24.343",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}