{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "15865124feed880978b79839c756ef6cbb4ec6b3"
            },
            {
              "fixed": "25cf414b0610fea29d8e045f315648d9007c9a46"
            },
            {
              "fixed": "0fcddf9c7c10202946d5b19409efbdff744fba88"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49303.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers: staging: rtl8192eu: Fix deadlock in rtw_joinbss_event_prehandle\n\nThere is a deadlock in rtw_joinbss_event_prehandle(), which is shown below:\n\n   (Thread 1)                |      (Thread 2)\n                             | _set_timer()\nrtw_joinbss_event_prehandle()|  mod_timer()\n spin_lock_bh() //(1)        |  (wait a time)\n ...                         | rtw_join_timeout_handler()\n                             |  _rtw_join_timeout_handler()\n del_timer_sync()            |   spin_lock_bh() //(2)\n (wait timer to stop)        |   ...\n\nWe hold pmlmepriv-\u003elock in position (1) of thread 1 and\nuse del_timer_sync() to wait timer to stop, but timer handler\nalso need pmlmepriv-\u003elock in position (2) of thread 2.\nAs a result, rtw_joinbss_event_prehandle() will block forever.\n\nThis patch extracts del_timer_sync() from the protection of\nspin_lock_bh(), which could let timer handler to obtain\nthe needed lock. What`s more, we change spin_lock_bh() to\nspin_lock_irq() in _rtw_join_timeout_handler() in order to\nprevent deadlock.",
  "id": "CVE-2022-49303",
  "modified": "2026-04-01T23:09:00.933780637Z",
  "published": "2025-02-26T02:10:37.056Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0fcddf9c7c10202946d5b19409efbdff744fba88"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25cf414b0610fea29d8e045f315648d9007c9a46"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49303.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49303"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "drivers: staging: rtl8192eu: Fix deadlock in rtw_joinbss_event_prehandle"
}