cve-2024-35955
Vulnerability from cvelistv5
Published
2024-05-20 09:41
Modified
2024-11-05 09:25
Summary
kprobes: Fix possible use-after-free issue on kprobe registration
Impacted products
Vendor Product Version
Linux Linux Version: 6.0
Show details on NVD website


{
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        "metrics": [
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              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 8.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
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              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
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                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-20T17:42:32.103628Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
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                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
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            "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
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        "title": "CVE Program Container"
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    ],
    "cna": {
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
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          ],
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          "vendor": "Linux",
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              "version": "6.0"
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          "value": "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 -\u003e\n MODULE_STATE_GOING -\u003e 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-\u003estate 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-\u003estate 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."
        }
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-35955",
    "datePublished": "2024-05-20T09:41:48.607Z",
    "dateReserved": "2024-05-17T13:50:33.136Z",
    "dateUpdated": "2024-11-05T09:25:40.087Z",
    "state": "PUBLISHED"
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  }
}


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