{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-35955",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-35955"
  ],
  "published": "2024-05-20T09:42:41Z",
  "summary": "kprobes: Fix possible use-after-free issue on kprobe registration",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nkprobes: Fix possible use-after-free issue on kprobe registration\n\nWhen unloading a module, its state is changing MODULE_STATE_LIVE ->\n MODULE_STATE_GOING -> MODULE_STATE_UNFORMED. Each change will take\na time. `is_module_text_address()` and `__module_text_address()`\nworks with MODULE_STATE_LIVE and MODULE_STATE_GOING.\nIf we use `is_module_text_address()` and `__module_text_address()`\nseparately, there is a chance that the first one is succeeded but the\nnext one is failed because module->state becomes MODULE_STATE_UNFORMED\nbetween those operations.\n\nIn `check_kprobe_address_safe()`, if the second `__module_text_address()`\nis failed, that is ignored because it expected a kernel_text address.\nBut it may have failed simply because module->state has been changed\nto MODULE_STATE_UNFORMED. In this case, arm_kprobe() will try to modify\nnon-exist module text address (use-after-free).\n\nTo fix this problem, we should not use separated `is_module_text_address()`\nand `__module_text_address()`, but use only `__module_text_address()`\nonce and do `try_module_get(module)` which is only available with\nMODULE_STATE_LIVE.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
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        "1:6.1.47-1+rpt2",
        "1:6.1.47-1+rpt4",
        "1:6.1.54-1+rpt2",
        "1:6.1.58-1+rpt2",
        "1:6.1.63-1+rpt1",
        "1:6.1.73-1+rpt1",
        "1:6.6.20-1+rpt1"
      ],
      "ecosystem_specific": {
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            "binary_version": "1:6.1.21-1+rpt1"
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            "binary_version": "1:6.1.21-1+rpt1"
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            "binary_version": "1:6.1.47-1+rpt2"
          },
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            "binary_version": "1:6.1.47-1+rpt2"
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            "binary_version": "1:6.1.47-1+rpt2"
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            "assessment": "upstream version (no usable Linux commit)",
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-35955"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b5808d40093403334d939e2c3c417144d12a6f33"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/93eb31e7c3399e326259f2caa17be1e821f5a412"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5062d1f4f07facbdade0f402d9a04a788f52e26d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2df2dd27066cdba8041e46a64362325626bdfb2e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/62029bc9ff2c17a4e3a2478d83418ec575413808"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d15023fb407337028a654237d8968fefdcf87c2f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/36b57c7d2f8b7de224980f1a284432846ad71ca0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/325f3fb551f8cd672dbbfc4cf58b14f9ee3fc9e8"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-24T06:48:58Z"
  }
}