{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-50267",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2024-50267"
  ],
  "published": "2024-11-19T01:35:04Z",
  "summary": "USB: serial: io_edgeport: fix use after free in debug printk",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: io_edgeport: fix use after free in debug printk\n\nThe \"dev_dbg(&urb->dev->dev, ...\" which happens after usb_free_urb(urb)\nis a use after free of the \"urb\" pointer.  Store the \"dev\" pointer at the\nstart of the function to avoid this issue.",
  "severity": [
    {
      "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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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-50267"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e6ceb04eeb6115d872d4c4078d12f1170ed755ce"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/39709ce93f5c3f9eb535efe2afea088805d1128f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e567fc8f7a4460e486e52c9261b1e8b9f5dc42aa"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/44fff2c16c5aafbdb70c7183dae0a415ae74705e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/275258c30bbda29467216e96fb655b16bcc9992b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/13d6ff3ca76056d06a9d88300be2a293442ff595"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/314bdf446053e123f37543aa535197ee75f8aa97"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/37bb5628379295c1254c113a407cab03a0f4d0b4"
    }
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  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T11:52:36Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 7.8,
      "cvss_v3_severity": "High",
      "scenario": "AV:L - The command URBs whose completion handler contains the defect are generated by ordinary tty operations (open/close, tcsetattr, TIOCMSET/TIOCMBIS, TIOCSBRK) on /dev/ttyUSB*, so a local user on a machine with an Edgeport device attached drives the vulnerable path via syscalls. This matches the kernel.org CNA's consistent treatment of USB-serial host driver flaws as local.\nAC:L - No race has to be won and no memory layout has to be groomed \u2014 the attacker simply issues command-generating ioctls and the released urb is dereferenced whenever the transfer completes with a nonzero status (stall, protocol error, shutdown, unlink), which is repeatable at will.\nPR:L - Only access to the /dev/ttyUSB* node is required; there is no capability check anywhere between the tty entry points and write_cmd_usb(), and on embedded, automotive and Android-style deployments the serial node is routinely readable/writable by unprivileged service or app users.\nUI:N - The attacker performs all the steps itself by opening and configuring the serial port; no separate victim has to open a file, mount anything, or take any action.\nS:U - The released urb and any consequent corruption stay within the kernel's own security authority; there is no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - This is a use-after-free read: the stale urb's ->dev field is loaded and dereferenced, so if the slab object is reallocated with attacker-influenced content the pointer chase can be steered to read arbitrary kernel memory, which is then formatted into the kernel log.\nI:H - Per use-after-free scoring, control over the reallocated urb contents makes the dereferenced device pointer attacker-influenced, and the resulting struct device accesses can be leveraged toward corrupting kernel state and hijacking control flow.\nA:H - Dereferencing a released urb and the device pointer read out of it readily faults or trips KASAN/slab debugging, producing an oops or panic that takes down the kernel."
    }
  }
}