{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-44965",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-44965"
  ],
  "published": "2024-09-04T18:36:26Z",
  "summary": "x86/mm: Fix pti_clone_pgtable() alignment assumption",
  "details": "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": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.105",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-44965"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/18da1b27ce16a14a9b636af9232acb4fb24f4c9e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/25a727233a40a9b33370eec9f0cad67d8fd312f8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d00c9b4bbc442d99e1dafbdfdab848bc1ead73f6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4d143ae782009b43b4f366402e5c37f59d4e4346"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5c580c1050bcbc15c3e78090859d798dcf8c9763"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ca07aab70dd3b5e7fddb62d7a6ecd7a7d6d0b2ed"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/df3eecb5496f87263d171b254ca6e2758ab3c35c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/41e71dbb0e0a0fe214545fe64af031303a08524c"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}