cve-2022-49907
Vulnerability from cvelistv5
Published
2025-05-01 14:10
Modified
2025-05-04 08:48
Severity ?
Summary
net: mdio: fix undefined behavior in bit shift for __mdiobus_register
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/20ed01a7b9af6e6a3c33761eebbb710ea6dd49b7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/40e4eb324c59e11fcb927aa46742d28aba6ecb8a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4954b5359eb141499492fadfab891e28905509e2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/634f066d02bdb22a26da7deb0c7617ab1a65fc9d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6ce6f8f8f6316da6f92afe7490bc2f0b654d68e0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7006176a3c863e3e353ce1b8a349ef5bb1b9320e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/985a88bf0b27193522bba7856b1763f428cef19d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a3fafc974be37319679f36dc4e7cca7db1e02973
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/phy/mdio_bus.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          "vendor": "Linux",
          "versions": [
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              "version": "2.6.28"
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "4.9.333",
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              "status": "unaffected",
              "version": "4.14.299",
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              "version": "4.19.265",
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              "status": "unaffected",
              "version": "5.4.224",
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              "status": "unaffected",
              "version": "5.10.154",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.15.78",
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              "status": "unaffected",
              "version": "6.0.8",
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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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\nnet: mdio: fix undefined behavior in bit shift for __mdiobus_register\n\nShifting signed 32-bit value by 31 bits is undefined, so changing\nsignificant bit to unsigned. The UBSAN warning calltrace like below:\n\nUBSAN: shift-out-of-bounds in drivers/net/phy/mdio_bus.c:586:27\nleft shift of 1 by 31 places cannot be represented in type \u0027int\u0027\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x7d/0xa5\n dump_stack+0x15/0x1b\n ubsan_epilogue+0xe/0x4e\n __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c\n __mdiobus_register+0x49d/0x4e0\n fixed_mdio_bus_init+0xd8/0x12d\n do_one_initcall+0x76/0x430\n kernel_init_freeable+0x3b3/0x422\n kernel_init+0x24/0x1e0\n ret_from_fork+0x1f/0x30\n \u003c/TASK\u003e"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:48:25.444Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/20ed01a7b9af6e6a3c33761eebbb710ea6dd49b7"
        },
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          "url": "https://git.kernel.org/stable/c/7006176a3c863e3e353ce1b8a349ef5bb1b9320e"
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          "url": "https://git.kernel.org/stable/c/a3fafc974be37319679f36dc4e7cca7db1e02973"
        },
        {
          "url": "https://git.kernel.org/stable/c/4954b5359eb141499492fadfab891e28905509e2"
        },
        {
          "url": "https://git.kernel.org/stable/c/634f066d02bdb22a26da7deb0c7617ab1a65fc9d"
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          "url": "https://git.kernel.org/stable/c/985a88bf0b27193522bba7856b1763f428cef19d"
        },
        {
          "url": "https://git.kernel.org/stable/c/6ce6f8f8f6316da6f92afe7490bc2f0b654d68e0"
        },
        {
          "url": "https://git.kernel.org/stable/c/40e4eb324c59e11fcb927aa46742d28aba6ecb8a"
        }
      ],
      "title": "net: mdio: fix undefined behavior in bit shift for __mdiobus_register",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49907",
    "datePublished": "2025-05-01T14:10:51.073Z",
    "dateReserved": "2025-05-01T14:05:17.246Z",
    "dateUpdated": "2025-05-04T08:48:25.444Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49907\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-01T15:16:15.810\",\"lastModified\":\"2025-05-02T13:52:51.693\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: mdio: fix undefined behavior in bit shift for __mdiobus_register\\n\\nShifting signed 32-bit value by 31 bits is undefined, so changing\\nsignificant bit to unsigned. The UBSAN warning calltrace like below:\\n\\nUBSAN: shift-out-of-bounds in drivers/net/phy/mdio_bus.c:586:27\\nleft shift of 1 by 31 places cannot be represented in type \u0027int\u0027\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x7d/0xa5\\n dump_stack+0x15/0x1b\\n ubsan_epilogue+0xe/0x4e\\n __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c\\n __mdiobus_register+0x49d/0x4e0\\n fixed_mdio_bus_init+0xd8/0x12d\\n do_one_initcall+0x76/0x430\\n kernel_init_freeable+0x3b3/0x422\\n kernel_init+0x24/0x1e0\\n ret_from_fork+0x1f/0x30\\n \u003c/TASK\u003e\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: mdio: corrige comportamiento indefinido en el desplazamiento de bits para __mdiobus_register El desplazamiento de un valor de 32 bits con signo en 31 bits no est\u00e1 definido, por lo que se cambia el bit significativo a sin signo. El seguimiento de llamadas de advertencia de UBSAN como se muestra a continuaci\u00f3n: UBSAN: desplazamiento fuera de los l\u00edmites en drivers/net/phy/mdio_bus.c:586:27 El desplazamiento a la izquierda de 1 por 31 lugares no se puede representar en el tipo \u0027int\u0027 Seguimiento de llamadas:   dump_stack_lvl+0x7d/0xa5 dump_stack+0x15/0x1b ubsan_epilogue+0xe/0x4e __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c __mdiobus_register+0x49d/0x4e0 fixed_mdio_bus_init+0xd8/0x12d do_one_initcall+0x76/0x430 kernel_init_freeable+0x3b3/0x422 kernel_init+0x24/0x1e0 ret_from_fork+0x1f/0x30  \"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/20ed01a7b9af6e6a3c33761eebbb710ea6dd49b7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/40e4eb324c59e11fcb927aa46742d28aba6ecb8a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4954b5359eb141499492fadfab891e28905509e2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/634f066d02bdb22a26da7deb0c7617ab1a65fc9d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6ce6f8f8f6316da6f92afe7490bc2f0b654d68e0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7006176a3c863e3e353ce1b8a349ef5bb1b9320e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/985a88bf0b27193522bba7856b1763f428cef19d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a3fafc974be37319679f36dc4e7cca7db1e02973\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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