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CVE-2026-74372

Estado: RecibidaSin puntuar—

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

raid1: fix nr_pending leak in REQ_ATOMIC bad-block error path

In raid1_write_request(), each per-mirror loop iteration begins by incrementing rdev->nr_pending. If a REQ_ATOMIC write encounters a badblock within the requested range, the code jumps to err_handle without dropping the reference taken for the current mirror.

err_handle's cleanup loop will only decrements for k < i and r1_bio->bios[k] is non-NULL. The current slot is therefore skipped, leaving its nr_pending reference leaked permanently. The reference prevents the rdev from ever being removed, since raid1_remove_conf() refuses to remove an rdev with nr_pending > 0.

Leer descripción completaMostrar menos

Fix this by calling rdev_dec_pending() before jumping to err_handle.

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-2026-74372",
  "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": "f2a38abf5f1c5aeb3be8e9f4d3d815c867fff7ca",
              "lessThan": "5ac9e793ba2583d72740d929e7858a6c82e22ed5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f2a38abf5f1c5aeb3be8e9f4d3d815c867fff7ca",
              "lessThan": "731485617bf862f1289c3f40ed1f800d0475826f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f2a38abf5f1c5aeb3be8e9f4d3d815c867fff7ca",
              "lessThan": "909d9dc3b5730c8ed7b764c68bc788342df2a07b",
              "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": "6.13"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.13",
              "versionType": "semver"
            },
            {
              "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": "2026-08-15T06:22:38.967",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/5ac9e793ba2583d72740d929e7858a6c82e22ed5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/731485617bf862f1289c3f40ed1f800d0475826f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/909d9dc3b5730c8ed7b764c68bc788342df2a07b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nraid1: fix nr_pending leak in REQ_ATOMIC bad-block error path\n\nIn raid1_write_request(), each per-mirror loop iteration begins by\nincrementing rdev->nr_pending. If a REQ_ATOMIC write encounters a\nbadblock within the requested range, the code jumps to err_handle\nwithout dropping the reference taken for the current mirror.\n\nerr_handle's cleanup loop will only decrements for k < i and\nr1_bio->bios[k] is non-NULL. The current slot is therefore skipped,\nleaving its nr_pending reference leaked permanently. The reference\nprevents the rdev from ever being removed, since raid1_remove_conf()\nrefuses to remove an rdev with nr_pending > 0.\n\nFix this by calling rdev_dec_pending() before jumping to err_handle."
    }
  ],
  "lastModified": "2026-08-17T06:19:32.023",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}