{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "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": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "mm/hugetlb.c"
               ],
               "versions": [
                  {
                     "version": "79aa925bf239",
                     "lessThan": "4c806333efea",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "79aa925bf239",
                     "lessThan": "f6c5d21db16a",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "79aa925bf239",
                     "lessThan": "538faabf31e9",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "79aa925bf239",
                     "lessThan": "b76b46902c2d",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "mm/hugetlb.c"
               ],
               "versions": [
                  {
                     "version": "5.10",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.10",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.91",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.30",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8.9",
                     "lessThanOrEqual": "6.8.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.9",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/4c806333efea1000a2a9620926f560ad2e1ca7cc"
            },
            {
               "url": "https://git.kernel.org/stable/c/f6c5d21db16a0910152ec8aa9d5a7aed72694505"
            },
            {
               "url": "https://git.kernel.org/stable/c/538faabf31e9c53d8c870d114846fda958a0de10"
            },
            {
               "url": "https://git.kernel.org/stable/c/b76b46902c2d0395488c8412e1116c2486cdfcb2"
            }
         ],
         "title": "mm/hugetlb: fix missing hugetlb_lock for resv uncharge",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-36000",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}