CVE-2024-56706 (GCVE-0-2024-56706)
Vulnerability from cvelistv5
Published
2024-12-28 09:46
Modified
2025-05-04 10:02
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: s390/cpum_sf: Fix and protect memory allocation of SDBs with mutex Reservation of the PMU hardware is done at first event creation and is protected by a pair of mutex_lock() and mutex_unlock(). After reservation of the PMU hardware the memory required for the PMUs the event is to be installed on is allocated by allocate_buffers() and alloc_sampling_buffer(). This done outside of the mutex protection. Without mutex protection two or more concurrent invocations of perf_event_init() may run in parallel. This can lead to allocation of Sample Data Blocks (SDBs) multiple times for the same PMU. Prevent this and protect memory allocation of SDBs by mutex.
References
Impacted products
Vendor Product Version
Linux Linux Version: 8a6fe8f21ec4f049a7b1fe120ad50a5065a9c7a8
Version: 8a6fe8f21ec4f049a7b1fe120ad50a5065a9c7a8
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/s390/kernel/perf_cpum_sf.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "4b3bdfa89635db6a53e02955548bd07bebcae233",
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
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              "version": "0",
              "versionType": "semver"
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              "version": "6.12.2",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.2",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/cpum_sf: Fix and protect memory allocation of SDBs with mutex\n\nReservation of the PMU hardware is done at first event creation\nand is protected by a pair of mutex_lock() and mutex_unlock().\nAfter reservation of the PMU hardware the memory\nrequired for the PMUs the event is to be installed on is\nallocated by allocate_buffers() and alloc_sampling_buffer().\nThis done outside of the mutex protection.\nWithout mutex protection two or more concurrent invocations of\nperf_event_init() may run in parallel.\nThis can lead to allocation of Sample Data Blocks (SDBs)\nmultiple times for the same PMU.\nPrevent this and protect memory allocation of SDBs by\nmutex."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T10:02:56.177Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4b3bdfa89635db6a53e02955548bd07bebcae233"
        },
        {
          "url": "https://git.kernel.org/stable/c/f55bd479d8663a4a4e403b3d308d3d1aa33d92df"
        }
      ],
      "title": "s390/cpum_sf: Fix and protect memory allocation of SDBs with mutex",
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56706",
    "datePublished": "2024-12-28T09:46:27.297Z",
    "dateReserved": "2024-12-27T15:00:39.856Z",
    "dateUpdated": "2025-05-04T10:02:56.177Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-56706\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-12-28T10:15:19.400\",\"lastModified\":\"2024-12-28T10:15:19.400\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ns390/cpum_sf: Fix and protect memory allocation of SDBs with mutex\\n\\nReservation of the PMU hardware is done at first event creation\\nand is protected by a pair of mutex_lock() and mutex_unlock().\\nAfter reservation of the PMU hardware the memory\\nrequired for the PMUs the event is to be installed on is\\nallocated by allocate_buffers() and alloc_sampling_buffer().\\nThis done outside of the mutex protection.\\nWithout mutex protection two or more concurrent invocations of\\nperf_event_init() may run in parallel.\\nThis can lead to allocation of Sample Data Blocks (SDBs)\\nmultiple times for the same PMU.\\nPrevent this and protect memory allocation of SDBs by\\nmutex.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: s390/cpum_sf: Reparar y proteger la asignaci\u00f3n de memoria de los SDB con mutex La reserva del hardware de la PMU se realiza en la primera creaci\u00f3n del evento y est\u00e1 protegida por un par de mutex_lock() y mutex_unlock(). Despu\u00e9s de la reserva del hardware de la PMU, la memoria requerida para las PMU en las que se instalar\u00e1 el evento se asigna mediante allocate_buffers() y alloc_sampling_buffer(). Esto se hace fuera de la protecci\u00f3n mutex. Sin la protecci\u00f3n mutex, dos o m\u00e1s invocaciones simult\u00e1neas de perf_event_init() pueden ejecutarse en paralelo. Esto puede provocar la asignaci\u00f3n de bloques de datos de muestra (SDB) varias veces para la misma PMU. Evite esto y proteja la asignaci\u00f3n de memoria de los SDB mediante mutex.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4b3bdfa89635db6a53e02955548bd07bebcae233\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f55bd479d8663a4a4e403b3d308d3d1aa33d92df\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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