{
   "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: turn folio_test_hugetlb into a PageType\n\nThe current folio_test_hugetlb() can be fooled by a concurrent folio split\ninto returning true for a folio which has never belonged to hugetlbfs. \nThis can't happen if the caller holds a refcount on it, but we have a few\nplaces (memory-failure, compaction, procfs) which do not and should not\ntake a speculative reference.\n\nSince hugetlb pages do not use individual page mapcounts (they are always\nfully mapped and use the entire_mapcount field to record the number of\nmappings), the PageType field is available now that page_mapcount()\nignores the value in this field.\n\nIn compaction and with CONFIG_DEBUG_VM enabled, the current implementation\ncan result in an oops, as reported by Luis. This happens since 9c5ccf2db04b\n(\"mm: remove HUGETLB_PAGE_DTOR\") effectively added some VM_BUG_ON() checks\nin the PageHuge() testing path.\n\n[willy@infradead.org: update vmcoreinfo]\n  Link: https://lkml.kernel.org/r/ZgGZUvsdhaT1Va-T@casper.infradead.org"
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "include/linux/page-flags.h",
                  "include/trace/events/mmflags.h",
                  "kernel/vmcore_info.c",
                  "mm/hugetlb.c"
               ],
               "versions": [
                  {
                     "version": "9c5ccf2db04b",
                     "lessThan": "2431b5f2650d",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9c5ccf2db04b",
                     "lessThan": "9fdcc5b6359d",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9c5ccf2db04b",
                     "lessThan": "d99e3140a4d3",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "include/linux/page-flags.h",
                  "include/trace/events/mmflags.h",
                  "kernel/vmcore_info.c",
                  "mm/hugetlb.c"
               ],
               "versions": [
                  {
                     "version": "6.6",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.6",
                     "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/2431b5f2650dfc47ce782d1ca7b02d6b3916976f"
            },
            {
               "url": "https://git.kernel.org/stable/c/9fdcc5b6359dfdaa52a55033bf50e2cedd66eb32"
            },
            {
               "url": "https://git.kernel.org/stable/c/d99e3140a4d33e26066183ff727d8f02f56bec64"
            }
         ],
         "title": "mm: turn folio_test_hugetlb into a PageType",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-35993",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}