{
  "cveId": "CVE-2024-50100",
  "url": "https://patchblox.com/security/cve/CVE-2024-50100",
  "summary": "CVE-2024-50100 is fixed in 26 products on 1 platform, first by DEBIAN-CVE-2024-50100, released November 5, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  USB: gadget: dummy-hcd: Fix \u0022task hung\u0022 problem...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  USB: gadget: dummy-hcd: Fix \u0022task hung\u0022 problem  The syzbot fuzzer has been encountering \u0022task hung\u0022 problems ever since the dummy-hcd driver was changed to use hrtimers instead of regular timers.  It turns out that the problems are caused by a subtle difference between the timer_pending() and hrtimer_active() APIs.  The changeover blindly replaced the first by the second.  However, timer_pending() returns True when the timer is queued but not when its callback is running, whereas hrtimer_active() returns True when the hrtimer is queued _or_ its callback is running.  This difference occasionally caused dummy_urb_enqueue() to think that the callback routine had not yet started when in fact it was almost finished.  As a result the hrtimer was not restarted, which made it impossible for the driver to dequeue later the URB that was just enqueued.  This caused usb_kill_urb() to hang, and things got worse from there.  Since hrtimers have no API for telling when they are queued and the callback isn\u0027t running, the driver must keep track of this for itself. That\u0027s what this patch does, adding a new \u0022timer_pending\u0022 flag and setting or clearing it at the appropriate times.",
  "published": "2024-11-05T18:15:13Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00235,
  "epssPercentile": 0.14494,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
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  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
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    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
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}