{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/mm: Fix pti_clone_pgtable() alignment assumption\n\nGuenter reported dodgy crashes on an i386-nosmp build using GCC-11\nthat had the form of endless traps until entry stack exhaust and then\n#DF from the stack guard.\n\nIt turned out that pti_clone_pgtable() had alignment assumptions on\nthe start address, notably it hard assumes start is PMD aligned. This\nis true on x86_64, but very much not true on i386.\n\nThese assumptions can cause the end condition to malfunction, leading\nto a 'short' clone. Guess what happens when the user mapping has a\nshort copy of the entry text?\n\nUse the correct increment form for addr to avoid alignment\nassumptions."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "arch/x86/mm/pti.c"
               ],
               "versions": [
                  {
                     "version": "16a3fe634f6a",
                     "lessThan": "18da1b27ce16",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "16a3fe634f6a",
                     "lessThan": "25a727233a40",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "16a3fe634f6a",
                     "lessThan": "d00c9b4bbc44",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "16a3fe634f6a",
                     "lessThan": "4d143ae78200",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "16a3fe634f6a",
                     "lessThan": "5c580c1050bc",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "16a3fe634f6a",
                     "lessThan": "ca07aab70dd3",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "16a3fe634f6a",
                     "lessThan": "df3eecb5496f",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "16a3fe634f6a",
                     "lessThan": "41e71dbb0e0a",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "arch/x86/mm/pti.c"
               ],
               "versions": [
                  {
                     "version": "4.19",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "4.19",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.320",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.282",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.224",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.165",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.105",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.46",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.10.5",
                     "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/18da1b27ce16a14a9b636af9232acb4fb24f4c9e"
            },
            {
               "url": "https://git.kernel.org/stable/c/25a727233a40a9b33370eec9f0cad67d8fd312f8"
            },
            {
               "url": "https://git.kernel.org/stable/c/d00c9b4bbc442d99e1dafbdfdab848bc1ead73f6"
            },
            {
               "url": "https://git.kernel.org/stable/c/4d143ae782009b43b4f366402e5c37f59d4e4346"
            },
            {
               "url": "https://git.kernel.org/stable/c/5c580c1050bcbc15c3e78090859d798dcf8c9763"
            },
            {
               "url": "https://git.kernel.org/stable/c/ca07aab70dd3b5e7fddb62d7a6ecd7a7d6d0b2ed"
            },
            {
               "url": "https://git.kernel.org/stable/c/df3eecb5496f87263d171b254ca6e2758ab3c35c"
            },
            {
               "url": "https://git.kernel.org/stable/c/41e71dbb0e0a0fe214545fe64af031303a08524c"
            }
         ],
         "title": "x86/mm: Fix pti_clone_pgtable() alignment assumption",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-44965",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}