ghsa-m3hv-89f3-wrrc
Vulnerability from github
Published
2024-09-11 18:31
Modified
2025-05-09 09:33
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:

usb: xhci: Check for xhci->interrupters being allocated in xhci_mem_clearup()

If xhci_mem_init() fails, it calls into xhci_mem_cleanup() to mop up the damage. If it fails early enough, before xhci->interrupters is allocated but after xhci->max_interrupters has been set, which happens in most (all?) cases, things get uglier, as xhci_mem_cleanup() unconditionally derefences xhci->interrupters. With prejudice.

Gate the interrupt freeing loop with a check on xhci->interrupters being non-NULL.

Found while debugging a DMA allocation issue that led the XHCI driver on this exact path.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2024-45027"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-459"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-11T16:15:07Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: xhci: Check for xhci-\u003einterrupters being allocated in xhci_mem_clearup()\n\nIf xhci_mem_init() fails, it calls into xhci_mem_cleanup() to mop\nup the damage. If it fails early enough, before xhci-\u003einterrupters\nis allocated but after xhci-\u003emax_interrupters has been set, which\nhappens in most (all?) cases, things get uglier, as xhci_mem_cleanup()\nunconditionally derefences xhci-\u003einterrupters. With prejudice.\n\nGate the interrupt freeing loop with a check on xhci-\u003einterrupters\nbeing non-NULL.\n\nFound while debugging a DMA allocation issue that led the XHCI driver\non this exact path.",
  "id": "GHSA-m3hv-89f3-wrrc",
  "modified": "2025-05-09T09:33:18Z",
  "published": "2024-09-11T18:31:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-45027"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3efb29f6a78d4746f958c1ab6cd7981c5762f03b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/770cacc75b0091ece17349195d72133912c1ca7c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dcdb52d948f3a17ccd3fce757d9bd981d7c32039"
    }
  ],
  "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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