{
  "cveId": "CVE-2021-47239",
  "url": "https://patchblox.com/security/cve/CVE-2021-47239",
  "summary": "CVE-2021-47239 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47239, released May 21, 2024. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  net: usb: fix possible use-after-free in smsc75x...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  net: usb: fix possible use-after-free in smsc75xx_bind  The commit 46a8b29c6306 (\u0022net: usb: fix memory leak in smsc75xx_bind\u0022) fails to clean up the work scheduled in smsc75xx_reset-\u003E smsc75xx_set_multicast, which leads to use-after-free if the work is scheduled to start after the deallocation. In addition, this patch also removes a dangling pointer - dev-\u003Edata[0].  This patch calls cancel_work_sync to cancel the scheduled work and set the dangling pointer to NULL.",
  "published": "2024-05-21T15:15:13Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00228,
  "epssPercentile": 0.13701,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.10.46-1",
      "fix": "DEBIAN-CVE-2021-47239",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47239",
      "released": "2024-05-21T15:15:13Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.10.46-1",
      "fix": "DEBIAN-CVE-2021-47239",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47239",
      "released": "2024-05-21T15:15:13Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.10.46-1",
      "fix": "DEBIAN-CVE-2021-47239",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47239",
      "released": "2024-05-21T15:15:13Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}