CVE-2023-53219 (GCVE-0-2023-53219)
Vulnerability from cvelistv5
Published
2025-09-15 14:21
Modified
2025-09-15 14:21
Severity ?
Summary
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->timeout 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(&dev->tx_sim_timer, ..) netup_unidvb_finidev() | (wait a time) netup_unidvb_dma_fini() | netup_unidvb_dma_timeout() del_timer(&dma->timeout); | | ndev->pci_dev->dev //USE Fix by changing del_timer() to del_timer_sync().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/051af3f0b7d1cd8ab7f3e2523ad8ae1af44caba3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/07821524f67bf920342bc84ae8b3dea2a315a89e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0f5bb36bf9b39a2a96e730bf4455095b50713f63
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1550bcf2983ae1220cc8ab899a39a423fa7cb523
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/90229e9ee957d4514425e4a4d82c50ab5d57ac4d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c8f9c05e1ebcc9c7bc211cc8b74d8fb86a8756fc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dd5c77814f290b353917df329f36de1472d47154
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f9982db735a8495eee14267cf193c806b957e942
Impacted products
Vendor Product Version
Linux Linux Version: 52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e
Version: 52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e
Version: 52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e
Version: 52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e
Version: 52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e
Version: 52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e
Version: 52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e
Version: 52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e
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{
  "containers": {
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          "product": "Linux",
          "programFiles": [
            "drivers/media/pci/netup_unidvb/netup_unidvb_core.c"
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      "cpeApplicability": [
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: netup_unidvb: fix use-after-free at del_timer()\n\nWhen Universal DVB card is detaching, netup_unidvb_dma_fini()\nuses del_timer() to stop dma-\u003etimeout timer. But when timer\nhandler netup_unidvb_dma_timeout() is running, del_timer()\ncould not stop it. As a result, the use-after-free bug could\nhappen. The process is shown below:\n\n    (cleanup routine)          |        (timer routine)\n                               | mod_timer(\u0026dev-\u003etx_sim_timer, ..)\nnetup_unidvb_finidev()         | (wait a time)\n  netup_unidvb_dma_fini()      | netup_unidvb_dma_timeout()\n    del_timer(\u0026dma-\u003etimeout);  |\n                               |   ndev-\u003epci_dev-\u003edev //USE\n\nFix by changing del_timer() to del_timer_sync()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:21:47.459Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/0f5bb36bf9b39a2a96e730bf4455095b50713f63"
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      ],
      "title": "media: netup_unidvb: fix use-after-free at del_timer()",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53219",
    "datePublished": "2025-09-15T14:21:47.459Z",
    "dateReserved": "2025-09-15T14:19:21.845Z",
    "dateUpdated": "2025-09-15T14:21:47.459Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53219\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-15T15:15:48.623\",\"lastModified\":\"2025-09-15T15:22:27.090\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmedia: netup_unidvb: fix use-after-free at del_timer()\\n\\nWhen Universal DVB card is detaching, netup_unidvb_dma_fini()\\nuses del_timer() to stop dma-\u003etimeout timer. But when timer\\nhandler netup_unidvb_dma_timeout() is running, del_timer()\\ncould not stop it. As a result, the use-after-free bug could\\nhappen. The process is shown below:\\n\\n    (cleanup routine)          |        (timer routine)\\n                               | mod_timer(\u0026dev-\u003etx_sim_timer, ..)\\nnetup_unidvb_finidev()         | (wait a time)\\n  netup_unidvb_dma_fini()      | netup_unidvb_dma_timeout()\\n    del_timer(\u0026dma-\u003etimeout);  |\\n                               |   ndev-\u003epci_dev-\u003edev //USE\\n\\nFix by changing del_timer() to del_timer_sync().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/051af3f0b7d1cd8ab7f3e2523ad8ae1af44caba3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/07821524f67bf920342bc84ae8b3dea2a315a89e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/0f5bb36bf9b39a2a96e730bf4455095b50713f63\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1550bcf2983ae1220cc8ab899a39a423fa7cb523\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/90229e9ee957d4514425e4a4d82c50ab5d57ac4d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c8f9c05e1ebcc9c7bc211cc8b74d8fb86a8756fc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dd5c77814f290b353917df329f36de1472d47154\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f9982db735a8495eee14267cf193c806b957e942\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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