{
   "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/page_table_check: fix crash on ZONE_DEVICE\n\nNot all pages may apply to pgtable check.  One example is ZONE_DEVICE\npages: they map PFNs directly, and they don't allocate page_ext at all\neven if there's struct page around.  One may reference\ndevm_memremap_pages().\n\nWhen both ZONE_DEVICE and page-table-check enabled, then try to map some\ndax memories, one can trigger kernel bug constantly now when the kernel\nwas trying to inject some pfn maps on the dax device:\n\n kernel BUG at mm/page_table_check.c:55!\n\nWhile it's pretty legal to use set_pxx_at() for ZONE_DEVICE pages for page\nfault resolutions, skip all the checks if page_ext doesn't even exist in\npgtable checker, which applies to ZONE_DEVICE but maybe more."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "mm/page_table_check.c"
               ],
               "versions": [
                  {
                     "version": "df4e817b7108",
                     "lessThan": "51897f99351f",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "df4e817b7108",
                     "lessThan": "84d3549d54f5",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "df4e817b7108",
                     "lessThan": "dec238224786",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "df4e817b7108",
                     "lessThan": "8bb592c2eca8",
                     "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/page_table_check.c"
               ],
               "versions": [
                  {
                     "version": "5.17",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.17",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.96",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.36",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.9.7",
                     "lessThanOrEqual": "6.9.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.10",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/51897f99351fff7b57f4f141940fa93b4e90fd2b"
            },
            {
               "url": "https://git.kernel.org/stable/c/84d3549d54f5ff9fa3281257be3019386f51d1a0"
            },
            {
               "url": "https://git.kernel.org/stable/c/dec2382247860d2134c8d41e103e26460c099629"
            },
            {
               "url": "https://git.kernel.org/stable/c/8bb592c2eca8fd2bc06db7d80b38da18da4a2f43"
            }
         ],
         "title": "mm/page_table_check: fix crash on ZONE_DEVICE",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-40948",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}