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CVE-2024-35955 (GCVE-0-2024-35955)

Vulnerability from cvelistv5 – Published: 2024-05-20 09:41 – Updated: 2026-05-23 15:45
VLAI
Title
kprobes: Fix possible use-after-free issue on kprobe registration
Summary
In the Linux kernel, the following vulnerability has been resolved: kprobes: Fix possible use-after-free issue on kprobe registration When unloading a module, its state is changing MODULE_STATE_LIVE -> MODULE_STATE_GOING -> MODULE_STATE_UNFORMED. Each change will take a time. `is_module_text_address()` and `__module_text_address()` works with MODULE_STATE_LIVE and MODULE_STATE_GOING. If we use `is_module_text_address()` and `__module_text_address()` separately, there is a chance that the first one is succeeded but the next one is failed because module->state becomes MODULE_STATE_UNFORMED between those operations. In `check_kprobe_address_safe()`, if the second `__module_text_address()` is failed, that is ignored because it expected a kernel_text address. But it may have failed simply because module->state has been changed to MODULE_STATE_UNFORMED. In this case, arm_kprobe() will try to modify non-exist module text address (use-after-free). To fix this problem, we should not use separated `is_module_text_address()` and `__module_text_address()`, but use only `__module_text_address()` once and do `try_module_get(module)` which is only available with MODULE_STATE_LIVE.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-20 17:42 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1c836bad43f3e2ff71cc397a6e6ccb4e7bd116f8 , < b5808d40093403334d939e2c3c417144d12a6f33 (git)
Affected: 6a119c1a584aa7a2c6216458f1f272bf1bc93a93 , < 93eb31e7c3399e326259f2caa17be1e821f5a412 (git)
Affected: 2a49b025c36ae749cee7ccc4b7e456e02539cdc3 , < 5062d1f4f07facbdade0f402d9a04a788f52e26d (git)
Affected: a1edb85e60fdab1e14db63ae8af8db3f0d798fb6 , < 2df2dd27066cdba8041e46a64362325626bdfb2e (git)
Affected: 28f6c37a2910f565b4f5960df52b2eccae28c891 , < 62029bc9ff2c17a4e3a2478d83418ec575413808 (git)
Affected: 28f6c37a2910f565b4f5960df52b2eccae28c891 , < d15023fb407337028a654237d8968fefdcf87c2f (git)
Affected: 28f6c37a2910f565b4f5960df52b2eccae28c891 , < 36b57c7d2f8b7de224980f1a284432846ad71ca0 (git)
Affected: 28f6c37a2910f565b4f5960df52b2eccae28c891 , < 325f3fb551f8cd672dbbfc4cf58b14f9ee3fc9e8 (git)
Affected: 4262b6eb057d86c7829168c541654fe0d48fdac8 (git)
Affected: 97e813e6a143edf4208e15c72199c495ed80cea5 (git)
Affected: 16a544f1e013ba0660612f3fe35393b143b19a84 (git)
Affected: 4.19.256 , < 4.19.313 (semver)
Affected: 5.4.211 , < 5.4.275 (semver)
Affected: 5.10.137 , < 5.10.216 (semver)
Affected: 5.15.61 , < 5.15.157 (semver)
Affected: 4.14.291 , < 4.15 (semver)
Affected: 5.18.18 , < 5.19 (semver)
Affected: 5.19.2 , < 5.20 (semver)
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Linux Linux Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 4.19.313 , ≤ 4.19.* (semver)
Unaffected: 5.4.275 , ≤ 5.4.* (semver)
Unaffected: 5.10.216 , ≤ 5.10.* (semver)
Unaffected: 5.15.157 , ≤ 5.15.* (semver)
Unaffected: 6.1.87 , ≤ 6.1.* (semver)
Unaffected: 6.6.28 , ≤ 6.6.* (semver)
Unaffected: 6.8.7 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
linux linux_kernel Affected: 1c836bad43f3 , < b5808d400934 (git)
Affected: 6a119c1a584a , < 93eb31e7c339 (git)
Affected: 2a49b025c36a , < 93eb31e7c339 (git)
Affected: a1edb85e60fd , < 2df2dd27066c (git)
Affected: 28f6c37a2910 , < 62029bc9ff2c (git)
Affected: 28f6c37a2910 , < d15023fb4073 (git)
Affected: 28f6c37a2910 , < 36b57c7d2f8b (git)
Affected: 28f6c37a2910 , < 325f3fb551f8 (git)
Affected: 6.0
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.1 (custom)
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Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Unaffected: 0 , < * (custom)
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Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Affected: 0 , < V3.1 (custom)
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Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
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          "url": "https://git.kernel.org/stable/c/93eb31e7c3399e326259f2caa17be1e821f5a412"
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        {
          "url": "https://git.kernel.org/stable/c/5062d1f4f07facbdade0f402d9a04a788f52e26d"
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        {
          "url": "https://git.kernel.org/stable/c/2df2dd27066cdba8041e46a64362325626bdfb2e"
        },
        {
          "url": "https://git.kernel.org/stable/c/62029bc9ff2c17a4e3a2478d83418ec575413808"
        },
        {
          "url": "https://git.kernel.org/stable/c/d15023fb407337028a654237d8968fefdcf87c2f"
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        {
          "url": "https://git.kernel.org/stable/c/36b57c7d2f8b7de224980f1a284432846ad71ca0"
        },
        {
          "url": "https://git.kernel.org/stable/c/325f3fb551f8cd672dbbfc4cf58b14f9ee3fc9e8"
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      ],
      "title": "kprobes: Fix possible use-after-free issue on kprobe registration",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-35955",
    "datePublished": "2024-05-20T09:41:48.607Z",
    "dateReserved": "2024-05-17T13:50:33.136Z",
    "dateUpdated": "2026-05-23T15:45:28.228Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-35955",
      "date": "2026-09-16",
      "epss": "0.01177",
      "percentile": "0.66023"
    },
    "fkie_nvd": {
      "descriptions": "[{\"lang\": \"en\", \"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.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se resolvi\\u00f3 la siguiente vulnerabilidad: kprobes: soluciona un posible problema de use after free en el registro de kprobe Al descargar un m\\u00f3dulo, su estado cambia MODULE_STATE_LIVE -\u0026gt; MODULE_STATE_GOING -\u0026gt; MODULE_STATE_UNFORMED. Cada cambio llevar\\u00e1 un tiempo. `is_module_text_address()` y `__module_text_address()` funcionan con MODULE_STATE_LIVE y MODULE_STATE_GOING. Si usamos `is_module_text_address()` y `__module_text_address()` por separado, existe la posibilidad de que el primero tenga \\u00e9xito pero el siguiente falle porque module-\u0026gt;state se convierte en MODULE_STATE_UNFORMED entre esas operaciones. En `check_kprobe_address_safe()`, si el segundo `__module_text_address()` falla, se ignora porque esperaba una direcci\\u00f3n kernel_text. Pero es posible que haya fallado simplemente porque m\\u00f3dulo-\u0026gt;estado se cambi\\u00f3 a MODULE_STATE_UNFORMED. En este caso, arm_kprobe() intentar\\u00e1 modificar la direcci\\u00f3n de texto del m\\u00f3dulo que no existe (use after free). Para solucionar este problema, no debemos usar `is_module_text_address()` y `__module_text_address()` separados, sino usar solo `__module_text_address()` una vez y hacer `try_module_get(module)` que solo est\\u00e1 disponible con MODULE_STATE_LIVE.\"}]",
      "id": "CVE-2024-35955",
      "lastModified": "2024-11-21T09:21:17.163",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 8.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 2.8, \"impactScore\": 5.9}]}",
      "published": "2024-05-20T10:15:10.850",
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      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Awaiting Analysis",
      "weaknesses": "[{\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-19T01:20:53.000Z",
      "cve": "CVE-2024-35955",
      "id": "msrc_CVE-2024-35955",
      "initial_release_date": "2024-05-02T07:00:00.000Z",
      "product_status:fixed": "5",
      "product_status:known_affected": "5",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "kprobes: Fix possible use-after-free issue on kprobe registration",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-35955.json",
      "version": "2"
    },
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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.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: kprobes: soluciona un posible problema de use after free en el registro de kprobe Al descargar un m\u00f3dulo, su estado cambia MODULE_STATE_LIVE -\u0026gt; MODULE_STATE_GOING -\u0026gt; MODULE_STATE_UNFORMED. Cada cambio llevar\u00e1 un tiempo. `is_module_text_address()` y `__module_text_address()` funcionan con MODULE_STATE_LIVE y MODULE_STATE_GOING. 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{\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.313\", \"versionStartIncluding\": \"4.19.256\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.275\", \"versionStartIncluding\": \"5.4.211\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.216\", \"versionStartIncluding\": \"5.10.137\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.157\", \"versionStartIncluding\": \"5.15.61\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.87\", \"versionStartIncluding\": \"6.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.28\", \"versionStartIncluding\": \"6.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.7\", \"versionStartIncluding\": \"6.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"6.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.14.291\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.18.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.19.2\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-23T15:45:28.228Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-35955\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-23T15:45:28.228Z\", \"dateReserved\": \"2024-05-17T13:50:33.136Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-20T09:41:48.607Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.