{"cve":"CVE-2022-49305","nvd":{"published":"2025-02-26T07:01:07.310","modified":"2026-06-17T05:17:39.737","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers: staging: rtl8192u: Fix deadlock in ieee80211_beacons_stop()\n\nThere is a deadlock in ieee80211_beacons_stop(), which is shown below:\n\n   (Thread 1)              |      (Thread 2)\n                           | ieee80211_send_beacon()\nieee80211_beacons_stop()   |  mod_timer()\n spin_lock_irqsave() //(1) |  (wait a time)\n ...                       | ieee80211_send_beacon_cb()\n del_timer_sync()          |  spin_lock_irqsave() //(2)\n (wait timer to stop)      |  ...\n\nWe hold ieee->beacon_lock in position (1) of thread 1 and use\ndel_timer_sync() to wait timer to stop, but timer handler\nalso need ieee->beacon_lock in position (2) of thread 2.\nAs a result, ieee80211_beacons_stop() will block forever.\n\nThis patch extracts del_timer_sync() from the protection of\nspin_lock_irqsave(), which could let timer handler to obtain\nthe needed lock.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-667"],"references":["https://git.kernel.org/stable/c/042915c1bfedd684c1d98a841794ee203200571a","https://git.kernel.org/stable/c/1fbe033c52480f7954c057510040fa6286c4ea25","https://git.kernel.org/stable/c/66f769762f65d957f688f3258755c6ec410bf710","https://git.kernel.org/stable/c/806c7b53414934ba2a39449b31fd1a038e500273","https://git.kernel.org/stable/c/b34cb54923a6e5ddefbaf358c85c922c6ab456e2"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2022-49305","score":0.00204,"percentile":0.10425,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}