{
  "cveId": "CVE-2021-47195",
  "url": "https://patchblox.com/security/cve/CVE-2021-47195",
  "summary": "CVE-2021-47195 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47195, released April 10, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  spi: fix use-after-free of the add_lock mutex  C...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  spi: fix use-after-free of the add_lock mutex  Commit 6098475d4cb4 (\u0022spi: Fix deadlock when adding SPI controllers on SPI buses\u0022) introduced a per-controller mutex. But mutex_unlock() of said lock is called after the controller is already freed:    spi_unregister_controller(ctlr)   -\u003E put_device(\u0026ctlr-\u003Edev)     -\u003E spi_controller_release(dev)   -\u003E mutex_unlock(\u0026ctrl-\u003Eadd_lock)  Move the put_device() after the mutex_unlock().",
  "published": "2024-04-10T19:15:47Z",
  "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": 0.00219,
  "epssPercentile": 0.12435,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.15.5-1",
      "fix": "DEBIAN-CVE-2021-47195",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47195",
      "released": "2024-04-10T19:15:47Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.15.5-1",
      "fix": "DEBIAN-CVE-2021-47195",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47195",
      "released": "2024-04-10T19:15:47Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.15.5-1",
      "fix": "DEBIAN-CVE-2021-47195",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47195",
      "released": "2024-04-10T19:15:47Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}