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CVE-2025-68744

Estado: AplazadaSin puntuar—

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

bpf: Free special fields when update [lru_,]percpu_hash maps

As [lru_,]percpu_hash maps support BPF_KPTR_{REF,PERCPU}, missing calls to 'bpf_obj_free_fields()' in 'pcpu_copy_value()' could cause the memory referenced by BPF_KPTR_{REF,PERCPU} fields to be held until the map gets freed.

Fix this by calling 'bpf_obj_free_fields()' after 'copy_map_value[,_long]()' in 'pcpu_copy_value()'.

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-2025-68744",
  "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": "65334e64a493c6a0976de7ad56bf8b7a9ff04b4a",
              "lessThan": "994d6303ed0b84cbc795bb5becf7ed6de40d3f3c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "65334e64a493c6a0976de7ad56bf8b7a9ff04b4a",
              "lessThan": "3bf1378747e251571e0de15e7e0a6bf2919044e7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "65334e64a493c6a0976de7ad56bf8b7a9ff04b4a",
              "lessThan": "96a5cb7072cabbac5c66ac9318242c3bdceebb68",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "65334e64a493c6a0976de7ad56bf8b7a9ff04b4a",
              "lessThan": "4a03d69cece145e4fb527464be29c3806aa3221e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "65334e64a493c6a0976de7ad56bf8b7a9ff04b4a",
              "lessThan": "6af6e49a76c9af7d42eb923703e7648cb2bf401a",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "kernel/bpf/hashtab.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.4",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.63",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.17.13",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "kernel/bpf/hashtab.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-24T13:16:29.343",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/3bf1378747e251571e0de15e7e0a6bf2919044e7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4a03d69cece145e4fb527464be29c3806aa3221e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6af6e49a76c9af7d42eb923703e7648cb2bf401a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/96a5cb7072cabbac5c66ac9318242c3bdceebb68",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/994d6303ed0b84cbc795bb5becf7ed6de40d3f3c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Free special fields when update [lru_,]percpu_hash maps\n\nAs [lru_,]percpu_hash maps support BPF_KPTR_{REF,PERCPU}, missing\ncalls to 'bpf_obj_free_fields()' in 'pcpu_copy_value()' could cause the\nmemory referenced by BPF_KPTR_{REF,PERCPU} fields to be held until the\nmap gets freed.\n\nFix this by calling 'bpf_obj_free_fields()' after\n'copy_map_value[,_long]()' in 'pcpu_copy_value()'."
    }
  ],
  "lastModified": "2026-06-17T09:59:30.947",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}