ghsa-53f2-x8g3-2v76
Vulnerability from github
Published
2024-08-21 09:31
Modified
2024-09-13 15:31
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

xhci: Fix null pointer dereference when host dies

Make sure xhci_free_dev() and xhci_kill_endpoint_urbs() do not race and cause null pointer dereference when host suddenly dies.

Usb core may call xhci_free_dev() which frees the xhci->devs[slot_id] virt device at the same time that xhci_kill_endpoint_urbs() tries to loop through all the device's endpoints, checking if there are any cancelled urbs left to give back.

hold the xhci spinlock while freeing the virt device

Show details on source website

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{
   affected: [],
   aliases: [
      "CVE-2023-52898",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-476",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2024-08-21T07:15:06Z",
      severity: "MODERATE",
   },
   details: "In the Linux kernel, the following vulnerability has been resolved:\n\nxhci: Fix null pointer dereference when host dies\n\nMake sure xhci_free_dev() and xhci_kill_endpoint_urbs() do not race\nand cause null pointer dereference when host suddenly dies.\n\nUsb core may call xhci_free_dev() which frees the xhci->devs[slot_id]\nvirt device at the same time that xhci_kill_endpoint_urbs() tries to\nloop through all the device's endpoints, checking if there are any\ncancelled urbs left to give back.\n\nhold the xhci spinlock while freeing the virt device",
   id: "GHSA-53f2-x8g3-2v76",
   modified: "2024-09-13T15:31:31Z",
   published: "2024-08-21T09:31:32Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2023-52898",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/081105213ff6f661c114781d469233c7d0e09c2e",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/133b902378e4acbd824c29dd0d48570ad596e368",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/6fac4b5cecb3928a0a81069aaa815a2edc8dd5a1",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/a2bc47c43e70cf904b1af49f76d572326c08bca7",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/c462ac871f49753eca86bb960f573b993976a5ea",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/ea2ee5e9991caf74e0604f994c1831a5867055b2",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
         type: "CVSS_V3",
      },
   ],
}


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