{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-53189",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-53189"
  ],
  "published": "2026-06-25T08:41:40Z",
  "summary": "mm/huge_memory: update file PMD counter before folio_put()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/huge_memory: update file PMD counter before folio_put()\n\n__split_huge_pmd_locked() updates the file/shmem RSS counter after\ndropping the PMD mapping's folio reference.  If folio_put() drops the last\nreference, mm_counter_file() can later read freed folio state via\nfolio_test_swapbacked().\n\nMove the counter update before folio_put().",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.176",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-53189"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/84b3212b166b446faea27ebebb7161405ffceef9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/108963978a681c0c468d279cac2b930c27672877"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/459771c9cf30f378bdbd30fc65d17f7eb931bb59"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ae9d4caf6f133e884cf5fcda4982c493b35e5194"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6c29a8ba084e89499ca77b947e07ae817f9c16ce"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5f5b604e1e6bde4e889199168ee80fe8306d06ad"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ed5b030931292c94133437ac5e5ff580e498eabd"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8d878059924f12c1bc24556a92ec56add74de3c8"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T13:16:28Z"
  }
}