CVE-2025-40227

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: dealloc commit test ctx always The damon_ctx for testing online DAMON parameters commit inputs is deallocated only when the test fails. This means memory is leaked for every successful online DAMON parameters commit. Fix the leak by always deallocating it.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Deferred

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2025-12-04 16:16:15.333000

Last modified

2026-10-19 19:10:00.130000

View original CVE JSON

{
  "id": "CVE-2025-40227",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-12-04T16:16:15.333",
  "lastModified": "2026-10-19T19:10:00.130",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/sysfs: dealloc commit test ctx always\n\nThe damon_ctx for testing online DAMON parameters commit inputs is\ndeallocated only when the test fails.  This means memory is leaked for\nevery successful online DAMON parameters commit.  Fix the leak by always\ndeallocating it."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nmm/damon/sysfs: desasigna siempre el contexto de prueba de commit\n\nEl 'damon_ctx' para probar las entradas de commit de parámetros DAMON en línea es desasignado solo cuando la prueba falla. Esto significa que se fuga memoria por cada commit exitoso de parámetros DAMON en línea. Se corrige la fuga desasignándolo siempre."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "mm/damon/sysfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "4c9ea539ad59ec60676930dacee02b7adde2e0c0",
              "lessThan": "ba236520ae53418859f4b7c7de3c71478d3c0b5a",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "4c9ea539ad59ec60676930dacee02b7adde2e0c0",
              "lessThan": "139e7a572af0b45f558b5e502121a768dc328ba8",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "mm/damon/sysfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.15",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.15",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.17.6",
              "lessThanOrEqual": "6.17.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/139e7a572af0b45f558b5e502121a768dc328ba8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ba236520ae53418859f4b7c7de3c71478d3c0b5a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}