net: mdio: unexport __init-annotated mdio_bus_init()

{
  "id": "24e461bb8e5e3126c6691e24dd1994c582af65093dce9f829bdfd6cbe3cd2d63",
  "url": "https://osv.dev/vulnerability/CVE-2022-49350",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net: mdio: unexport __init-annotated mdio_bus_init()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net: mdio: unexport __init-annotated mdio_bus_init() EXPORT_SYMBOL and __init is a bad combination because the .init.text section is freed up after the initialization. Hence, modules cannot use symbols annotated __init. The access to a freed symbol may end up with kernel panic. modpost used to detect it, but it has been broken for a decade. Recently, I fixed modpost so it started to warn it again, then this showed up in linux-next builds. There are two ways to fix it: - Remove __init - Remove EXPORT_SYMBOL I chose the latter for this case because the only in-tree call-site, drivers/net/phy/phy_device.c is never compiled as modular. (CONFIG_PHYLIB is boolean)",
    "evidence": "osv:CVE-2022-49350",
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        "prerequisites": [],
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            "value": "4.14.283",
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    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-49350",
      "aliases": [
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      ],
      "modified": "2026-10-28T02:30:47.913682790Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/35b42dce619701f1300fb8498dae82c9bb1f0263",
        "https://git.kernel.org/stable/c/5534bcd7c40299862237c4a8fd9c5031b3db1538",
        "https://git.kernel.org/stable/c/59fa94cddf9eef8d8dae587373eed8b8f4eb11d7",
        "https://git.kernel.org/stable/c/6a90a44d53428a3bf01bd80df9ba78b19959270c",
        "https://git.kernel.org/stable/c/7759c3222815b945a94b212bc0c6cdec475cfec2",
        "https://git.kernel.org/stable/c/ab64ec2c75683f30ccde9eaaf0761002f901aa12",
        "https://git.kernel.org/stable/c/f2f0f8c18b60ca64ff50892ed899cf1c77864755",
        "https://git.kernel.org/stable/c/f5c68137f1191ba3fcf6260ec71b30be2e2bf4c3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49350.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49350",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
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    "security_relevant": true,
    "severity_evidence": null
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  "source_id": "core-osv",
  "document_id": 515888,
  "published_at": "2025-02-26T02:11:03.514+00:00"
}