CVE-2022-49907 (GCVE-0-2022-49907)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:10 – Updated: 2025-05-04 08:48
VLAI?
Title
net: mdio: fix undefined behavior in bit shift for __mdiobus_register
Summary
In the Linux kernel, the following vulnerability has been resolved: net: mdio: fix undefined behavior in bit shift for __mdiobus_register Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below: UBSAN: shift-out-of-bounds in drivers/net/phy/mdio_bus.c:586:27 left shift of 1 by 31 places cannot be represented in type 'int' Call Trace: <TASK> 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 </TASK>
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4fd5f812c23c7deee6425f4a318e85c317cd1d6c , < 20ed01a7b9af6e6a3c33761eebbb710ea6dd49b7 (git)
Affected: 4fd5f812c23c7deee6425f4a318e85c317cd1d6c , < 7006176a3c863e3e353ce1b8a349ef5bb1b9320e (git)
Affected: 4fd5f812c23c7deee6425f4a318e85c317cd1d6c , < a3fafc974be37319679f36dc4e7cca7db1e02973 (git)
Affected: 4fd5f812c23c7deee6425f4a318e85c317cd1d6c , < 4954b5359eb141499492fadfab891e28905509e2 (git)
Affected: 4fd5f812c23c7deee6425f4a318e85c317cd1d6c , < 634f066d02bdb22a26da7deb0c7617ab1a65fc9d (git)
Affected: 4fd5f812c23c7deee6425f4a318e85c317cd1d6c , < 985a88bf0b27193522bba7856b1763f428cef19d (git)
Affected: 4fd5f812c23c7deee6425f4a318e85c317cd1d6c , < 6ce6f8f8f6316da6f92afe7490bc2f0b654d68e0 (git)
Affected: 4fd5f812c23c7deee6425f4a318e85c317cd1d6c , < 40e4eb324c59e11fcb927aa46742d28aba6ecb8a (git)
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    Linux Linux Affected: 2.6.28
Unaffected: 0 , < 2.6.28 (semver)
Unaffected: 4.9.333 , ≤ 4.9.* (semver)
Unaffected: 4.14.299 , ≤ 4.14.* (semver)
Unaffected: 4.19.265 , ≤ 4.19.* (semver)
Unaffected: 5.4.224 , ≤ 5.4.* (semver)
Unaffected: 5.10.154 , ≤ 5.10.* (semver)
Unaffected: 5.15.78 , ≤ 5.15.* (semver)
Unaffected: 6.0.8 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/phy/mdio_bus.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "version": "2.6.28"
            },
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              "status": "unaffected",
              "version": "0",
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              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.333",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.299",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.265",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.224",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.154",
              "versionType": "semver"
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              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.78",
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              "status": "unaffected",
              "version": "6.0.8",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "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": [
        {
          "url": "https://git.kernel.org/stable/c/20ed01a7b9af6e6a3c33761eebbb710ea6dd49b7"
        },
        {
          "url": "https://git.kernel.org/stable/c/7006176a3c863e3e353ce1b8a349ef5bb1b9320e"
        },
        {
          "url": "https://git.kernel.org/stable/c/a3fafc974be37319679f36dc4e7cca7db1e02973"
        },
        {
          "url": "https://git.kernel.org/stable/c/4954b5359eb141499492fadfab891e28905509e2"
        },
        {
          "url": "https://git.kernel.org/stable/c/634f066d02bdb22a26da7deb0c7617ab1a65fc9d"
        },
        {
          "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"
      }
    }
  },
  "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"
}


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