usb: typec: altmode should keep reference to parent

{
  "id": "7db6117ffeeb860230b339ca780f89bfdb3c486e074684377973ffc5dece7d47",
  "url": "https://osv.dev/vulnerability/CVE-2024-50150",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "usb: typec: altmode should keep reference to parent",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: usb: typec: altmode should keep reference to parent The altmode device release refers to its parent device, but without keeping a reference to it. When registering the altmode, get a reference to the parent and put it in the release function. Before this fix, when using CONFIG_DEBUG_KOBJECT_RELEASE, we see issues like this: [ 43.572860] kobject: 'port0.0' (ffff8880057ba008): kobject_release, parent 0000000000000000 (delayed 3000) [ 43.573532] kobject: 'port0.1' (ffff8880057bd008): kobject_release, parent 0000000000000000 (delayed 1000) [ 43.574407] kobject: 'port0' (ffff8880057b9008): kobject_release, parent 0000000000000000 (delayed 3000) [ 43.575059] kobject: 'port1.0' (ffff8880057ca008): kobject_release, parent 0000000000000000 (delayed 4000) [ 43.575908] kobject: 'port1.1' (ffff8880057c9008): kobject_release, parent 0000000000000000 (delayed 4000) [ 43.576908] kobject: 'typec' (ffff8880062dbc00): kobject_release, parent 0000000000000000 (delayed 4000) [ 43.577769] kobject: 'port1' (ffff8880057bf008): kobject_release, parent 0000000000000000 (delayed 3000) [ 46.612867] ================================================================== [ 46.613402] BUG: KASAN: slab-use-after-free in typec_altmode_release+0x38/0x129 [ 46.614003] Read of size 8 at addr ffff8880057b9118 by task kworker/2:1/48 [ 46.614538] [ 46.614668] CPU: 2 UID: 0 PID: 48 Comm: kworker/2:1 Not tainted 6.12.0-rc1-00138-gedbae730ad31 #535 [ 46.",
    "evidence": "osv:CVE-2024-50150",
    "products": [
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          "value": "Kernel",
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        "prerequisites": [],
        "fixed_versions": [
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    "severity": "high",
    "structured": {
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      "aliases": [
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      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
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      "modified": "2026-10-28T02:30:37.667197657Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-265688.html",
        "https://git.kernel.org/stable/c/1ded6b12499e6dee9b0e1ceac633be36538f6fc2",
        "https://git.kernel.org/stable/c/2b0b33e8a58388fa9078f0fbe9af1900e6b08879",
        "https://git.kernel.org/stable/c/2c15c4133d00f5da632fce60ed013fc31aa9aa58",
        "https://git.kernel.org/stable/c/68a7c7fe322546be1464174c8d85874b8161deda",
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        "https://git.kernel.org/stable/c/87474406056891e4fdea0794e1f632b21b3dfa27",
        "https://git.kernel.org/stable/c/bee1b68cb8bcee4fd3a8bde3a4886e0b1375dc4d",
        "https://git.kernel.org/stable/c/befab3a278c59db0cc88c8799638064f6d3fd6f8",
        "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
        "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50150.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-50150",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50150.json"
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    "related_cves": [
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        "value": "CVE-2024-50150",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 505004,
  "published_at": "2024-11-07T09:31:26.782+00:00"
}