{
  "cveId": "CVE-2024-49976",
  "url": "https://patchblox.com/security/cve/CVE-2024-49976",
  "summary": "CVE-2024-49976 is fixed in 26 products on 1 platform, first by DEBIAN-CVE-2024-49976, released October 21, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  tracing/timerlat: Drop interface_lock in stop_kt...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  tracing/timerlat: Drop interface_lock in stop_kthread()  stop_kthread() is the offline callback for \u0022trace/osnoise:online\u0022, since commit 5bfbcd1ee57b (\u0022tracing/timerlat: Add interface_lock around clearing of kthread in stop_kthread()\u0022), the following ABBA deadlock scenario is introduced:  T1                            | T2 [BP]               | T3 [AP] osnoise_hotplug_workfn()      | work_for_cpu_fn()     | cpuhp_thread_fun()                               |   _cpu_down()         |   osnoise_cpu_die()   mutex_lock(\u0026interface_lock) |                       |     stop_kthread()                               |     cpus_write_lock() |       mutex_lock(\u0026interface_lock)   cpus_read_lock()            |     cpuhp_kick_ap()   |  As the interface_lock here in just for protecting the \u0022kthread\u0022 field of the osn_var, use xchg() instead to fix this issue. Also use for_each_online_cpu() back in stop_per_cpu_kthreads() as it can take cpu_read_lock() again.",
  "published": "2024-10-21T18:15:18Z",
  "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": 0.00178,
  "epssPercentile": 0.0742,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
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      "product": "dtb-aarch64",
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      "released": "2024-12-13T15:33:38Z"
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      "released": "2024-12-13T15:33:38Z"
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  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
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}