{
  "cveId": "CVE-2023-53219",
  "url": "https://patchblox.com/security/cve/CVE-2023-53219",
  "summary": "CVE-2023-53219 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53219, released September 15, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  media: netup_unidvb: fix use-after-free at del_t...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  media: netup_unidvb: fix use-after-free at del_timer()  When Universal DVB card is detaching, netup_unidvb_dma_fini() uses del_timer() to stop dma-\u003Etimeout timer. But when timer handler netup_unidvb_dma_timeout() is running, del_timer() could not stop it. As a result, the use-after-free bug could happen. The process is shown below:      (cleanup routine)          |        (timer routine)                                | mod_timer(\u0026dev-\u003Etx_sim_timer, ..) netup_unidvb_finidev()         | (wait a time)   netup_unidvb_dma_fini()      | netup_unidvb_dma_timeout()     del_timer(\u0026dma-\u003Etimeout);  |                                |   ndev-\u003Epci_dev-\u003Edev //USE  Fix by changing del_timer() to del_timer_sync().",
  "published": "2025-09-15T15:15:48Z",
  "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": 0.00164,
  "epssPercentile": 0.05594,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.37-1",
      "fix": "DEBIAN-CVE-2023-53219",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53219",
      "released": "2025-09-15T15:15:48Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.3.7-1",
      "fix": "DEBIAN-CVE-2023-53219",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53219",
      "released": "2025-09-15T15:15:48Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.3.7-1",
      "fix": "DEBIAN-CVE-2023-53219",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53219",
      "released": "2025-09-15T15:15:48Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}