{
   "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/vmalloc: fix page mapping if vm_area_alloc_pages() with high order fallback to order 0\n\nThe __vmap_pages_range_noflush() assumes its argument pages** contains\npages with the same page shift.  However, since commit e9c3cda4d86e (\"mm,\nvmalloc: fix high order __GFP_NOFAIL allocations\"), if gfp_flags includes\n__GFP_NOFAIL with high order in vm_area_alloc_pages() and page allocation\nfailed for high order, the pages** may contain two different page shifts\n(high order and order-0).  This could lead __vmap_pages_range_noflush() to\nperform incorrect mappings, potentially resulting in memory corruption.\n\nUsers might encounter this as follows (vmap_allow_huge = true, 2M is for\nPMD_SIZE):\n\nkvmalloc(2M, __GFP_NOFAIL|GFP_X)\n    __vmalloc_node_range_noprof(vm_flags=VM_ALLOW_HUGE_VMAP)\n        vm_area_alloc_pages(order=9) ---> order-9 allocation failed and fallback to order-0\n            vmap_pages_range()\n                vmap_pages_range_noflush()\n                    __vmap_pages_range_noflush(page_shift = 21) ----> wrong mapping happens\n\nWe can remove the fallback code because if a high-order allocation fails,\n__vmalloc_node_range_noprof() will retry with order-0.  Therefore, it is\nunnecessary to fallback to order-0 here.  Therefore, fix this by removing\nthe fallback code."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "mm/vmalloc.c"
               ],
               "versions": [
                  {
                     "version": "fe5c2bdcb14c",
                     "lessThan": "fd1ffbb50ef4",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "e9c3cda4d86e",
                     "lessThan": "de7bad86345c",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "e9c3cda4d86e",
                     "lessThan": "c91618816f4d",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "e9c3cda4d86e",
                     "lessThan": "61ebe5a747da",
                     "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/vmalloc.c"
               ],
               "versions": [
                  {
                     "version": "6.3",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.3",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.107",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.48",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.10.7",
                     "lessThanOrEqual": "6.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.11",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/fd1ffbb50ef4da5e1378a46616b6d7407dc795da"
            },
            {
               "url": "https://git.kernel.org/stable/c/de7bad86345c43cd040ed43e20d9fad78a3ee59f"
            },
            {
               "url": "https://git.kernel.org/stable/c/c91618816f4d21fc574d7577a37722adcd4075b2"
            },
            {
               "url": "https://git.kernel.org/stable/c/61ebe5a747da649057c37be1c37eb934b4af79ca"
            }
         ],
         "title": "mm/vmalloc: fix page mapping if vm_area_alloc_pages() with high order fallback to order 0",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-45022",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}