{
  "cveId": "CVE-2021-47494",
  "url": "https://patchblox.com/security/cve/CVE-2021-47494",
  "summary": "CVE-2021-47494 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47494, released May 22, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  cfg80211: fix management registrations locking...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  cfg80211: fix management registrations locking  The management registrations locking was broken, the list was locked for each wdev, but cfg80211_mgmt_registrations_update() iterated it without holding all the correct spinlocks, causing list corruption.  Rather than trying to fix it with fine-grained locking, just move the lock to the wiphy/rdev (still need the list on each wdev), we already need to hold the wdev lock to change it, so there\u0027s no contention on the lock in any case. This trivially fixes the bug since we hold one wdev\u0027s lock already, and now will hold the lock that protects all lists.",
  "published": "2024-05-22T09:15:11Z",
  "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": 0.00168,
  "epssPercentile": 0.06227,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.15.3-1",
      "fix": "DEBIAN-CVE-2021-47494",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47494",
      "released": "2024-05-22T09:15:11Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.15.3-1",
      "fix": "DEBIAN-CVE-2021-47494",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47494",
      "released": "2024-05-22T09:15:11Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.15.3-1",
      "fix": "DEBIAN-CVE-2021-47494",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47494",
      "released": "2024-05-22T09:15:11Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}