{"id":"AZL-60303","summary":"CVE-2022-49303 affecting package kernel 5.15.200.1-1","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.","modified":"2026-04-21T04:37:24.137903Z","published":"2025-02-26T07:01:07Z","upstream":["CVE-2022-49303"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49303"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"5.15.200.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-60303.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}