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CVE-2026-72437

Estado: RecibidaSin puntuar—

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

md/raid1: free r1_bio when REQ_NOWAIT is set and read would block on retry

When a read is retried, raid1_read_request() may be called with a pre-allocated r1_bio. If wait_read_barrier() fails for a REQ_NOWAIT read, the bio is completed and the function returns immediately. In this case the existing r1_bio is leaked.

This fixes a leak of pre-allocated r1_bio structures for retried reads.

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-2026-72437",
  "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": "5aa705039c4fca84575539bfa2b8a28454a3d2ca",
              "lessThan": "d1eda529a4bf6b866d02755723ee0eb1f037a5ed",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5aa705039c4fca84575539bfa2b8a28454a3d2ca",
              "lessThan": "c66ed3e6371f5dba8f5d8ab810d6683ddc99201e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5aa705039c4fca84575539bfa2b8a28454a3d2ca",
              "lessThan": "db58075bc9c2ad2731f9c063859b47104bc2e7ef",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5aa705039c4fca84575539bfa2b8a28454a3d2ca",
              "lessThan": "6d92dbd73d19a0622f60352ce9d9379f7a760112",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5aa705039c4fca84575539bfa2b8a28454a3d2ca",
              "lessThan": "c6e6354295845698d2fdfa20b71fc404786f7e93",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5aa705039c4fca84575539bfa2b8a28454a3d2ca",
              "lessThan": "69ad6ce47f9bf2b9fe0ed69b042db993d33bbf12",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/md/raid1.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.17",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "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/md/raid1.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:22:17.560",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/69ad6ce47f9bf2b9fe0ed69b042db993d33bbf12",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6d92dbd73d19a0622f60352ce9d9379f7a760112",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c66ed3e6371f5dba8f5d8ab810d6683ddc99201e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c6e6354295845698d2fdfa20b71fc404786f7e93",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d1eda529a4bf6b866d02755723ee0eb1f037a5ed",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/db58075bc9c2ad2731f9c063859b47104bc2e7ef",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1: free r1_bio when REQ_NOWAIT is set and read would block on retry\n\nWhen a read is retried, raid1_read_request() may be called with a\npre-allocated r1_bio. If wait_read_barrier() fails for a REQ_NOWAIT\nread, the bio is completed and the function returns immediately. In this\ncase the existing r1_bio is leaked.\n\nThis fixes a leak of pre-allocated r1_bio structures for retried reads."
    }
  ],
  "lastModified": "2026-08-17T06:19:11.080",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}