{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-36000",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-36000"
  ],
  "published": "2024-05-20T09:48:48Z",
  "summary": "mm/hugetlb: fix missing hugetlb_lock for resv uncharge",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/hugetlb: fix missing hugetlb_lock for resv uncharge\n\nThere is a recent report on UFFDIO_COPY over hugetlb:\n\nhttps://lore.kernel.org/all/000000000000ee06de0616177560@google.com/\n\n350:\tlockdep_assert_held(&hugetlb_lock);\n\nShould be an issue in hugetlb but triggered in an userfault context, where\nit goes into the unlikely path where two threads modifying the resv map\ntogether.  Mike has a fix in that path for resv uncharge but it looks like\nthe locking criteria was overlooked: hugetlb_cgroup_uncharge_folio_rsvd()\nwill update the cgroup pointer, so it requires to be called with the lock\nheld.",
  "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": "6.1.91",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-36000"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4c806333efea1000a2a9620926f560ad2e1ca7cc"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f6c5d21db16a0910152ec8aa9d5a7aed72694505"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/538faabf31e9c53d8c870d114846fda958a0de10"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b76b46902c2d0395488c8412e1116c2486cdfcb2"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-24T06:48:58Z"
  }
}