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CVE-2025-40228

Estado: AplazadaSin puntuar—

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

mm/damon/sysfs: catch commit test ctx alloc failure

Patch series "mm/damon/sysfs: fix commit test damon_ctx [de]allocation".

DAMON sysfs interface dynamically allocates and uses a damon_ctx object for testing if given inputs for online DAMON parameters update is valid. The object is being used without an allocation failure check, and leaked when the test succeeds. Fix the two bugs.

This patch (of 2):

The damon_ctx for testing online DAMON parameters commit inputs is used without its allocation failure check. This could result in an invalid memory access. Fix it by directly returning an error when the allocation failed.

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-2025-40228",
  "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": "4c9ea539ad59ec60676930dacee02b7adde2e0c0",
              "lessThan": "5b3609d9b9650bdea0bfdf643e0ce57e1aed67fc",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4c9ea539ad59ec60676930dacee02b7adde2e0c0",
              "lessThan": "f0c5118ebb0eb7e4fd6f0d2ace3315ca141b317f",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "mm/damon/sysfs.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.15",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.17.6",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "mm/damon/sysfs.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-04T16:16:15.460",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/5b3609d9b9650bdea0bfdf643e0ce57e1aed67fc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f0c5118ebb0eb7e4fd6f0d2ace3315ca141b317f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/sysfs: catch commit test ctx alloc failure\n\nPatch series \"mm/damon/sysfs: fix commit test damon_ctx [de]allocation\".\n\nDAMON sysfs interface dynamically allocates and uses a damon_ctx object\nfor testing if given inputs for online DAMON parameters update is valid.\nThe object is being used without an allocation failure check, and leaked\nwhen the test succeeds.  Fix the two bugs.\n\n\nThis patch (of 2):\n\nThe damon_ctx for testing online DAMON parameters commit inputs is used\nwithout its allocation failure check.  This could result in an invalid\nmemory access.  Fix it by directly returning an error when the allocation\nfailed."
    }
  ],
  "lastModified": "2026-06-17T09:21:29.570",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}