ghsa-94rm-fghw-676x
Vulnerability from github
Published
2024-09-13 09:30
Modified
2024-09-19 15:30
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

In the Linux kernel, the following vulnerability has been resolved:

thunderbolt: Mark XDomain as unplugged when router is removed

I noticed that when we do discrete host router NVM upgrade and it gets hot-removed from the PCIe side as a result of NVM firmware authentication, if there is another host connected with enabled paths we hang in tearing them down. This is due to fact that the Thunderbolt networking driver also tries to cleanup the paths and ends up blocking in tb_disconnect_xdomain_paths() waiting for the domain lock.

However, at this point we already cleaned the paths in tb_stop() so there is really no need for tb_disconnect_xdomain_paths() to do that anymore. Furthermore it already checks if the XDomain is unplugged and bails out early so take advantage of that and mark the XDomain as unplugged when we remove the parent router.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-46702"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-13T07:15:05Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Mark XDomain as unplugged when router is removed\n\nI noticed that when we do discrete host router NVM upgrade and it gets\nhot-removed from the PCIe side as a result of NVM firmware authentication,\nif there is another host connected with enabled paths we hang in tearing\nthem down. This is due to fact that the Thunderbolt networking driver\nalso tries to cleanup the paths and ends up blocking in\ntb_disconnect_xdomain_paths() waiting for the domain lock.\n\nHowever, at this point we already cleaned the paths in tb_stop() so\nthere is really no need for tb_disconnect_xdomain_paths() to do that\nanymore. Furthermore it already checks if the XDomain is unplugged and\nbails out early so take advantage of that and mark the XDomain as\nunplugged when we remove the parent router.",
  "id": "GHSA-94rm-fghw-676x",
  "modified": "2024-09-19T15:30:49Z",
  "published": "2024-09-13T09:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46702"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/18b3ad2a3cc877dd4b16f48d84aa27b78d53bf1d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/23ce6ba3b95488a2b9e9f6d43b340da0c15395dc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/747bc154577de6e6af4bc99abfa859b8419bb4d8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ca24cf9163c112bb6b580c6fb57c04a1f8b76e1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/80ac8d194831eca0c2f4fd862f7925532fda320c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e2006140ad2e01a02ed0aff49cc2ae3ceeb11f8d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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