{"id":"CVE-2022-49305","state":"PUBLISHED","title":"drivers: staging: rtl8192u: Fix deadlock in ieee80211_beacons_stop()","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.","publishedAt":"2025-02-26T02:10:38.212Z","updatedAt":"2026-05-11T18:57:07.127Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8fc8598e61f6f384f3eaf1d9b09500c12af47b37","status":"affected","lessThan":"b465bb2ebf666116c1ac745cb80c65154dc0d27e","versionType":"git"},{"version":"8fc8598e61f6f384f3eaf1d9b09500c12af47b37","status":"affected","lessThan":"1fbe033c52480f7954c057510040fa6286c4ea25","versionType":"git"},{"version":"8fc8598e61f6f384f3eaf1d9b09500c12af47b37","status":"affected","lessThan":"66f769762f65d957f688f3258755c6ec410bf710","versionType":"git"},{"version":"8fc8598e61f6f384f3eaf1d9b09500c12af47b37","status":"affected","lessThan":"042915c1bfedd684c1d98a841794ee203200571a","versionType":"git"},{"version":"8fc8598e61f6f384f3eaf1d9b09500c12af47b37","status":"affected","lessThan":"ffc9cab7243f8151be37966301307bfd3cda2db3","versionType":"git"},{"version":"8fc8598e61f6f384f3eaf1d9b09500c12af47b37","status":"affected","lessThan":"b34cb54923a6e5ddefbaf358c85c922c6ab456e2","versionType":"git"},{"version":"8fc8598e61f6f384f3eaf1d9b09500c12af47b37","status":"affected","lessThan":"806c7b53414934ba2a39449b31fd1a038e500273","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.33","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.33","versionType":"semver"},{"version":"4.19.247","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.198","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.122","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.47","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.15","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18.4","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c"]}],"references":["https://git.kernel.org/stable/c/b465bb2ebf666116c1ac745cb80c65154dc0d27e","https://git.kernel.org/stable/c/1fbe033c52480f7954c057510040fa6286c4ea25","https://git.kernel.org/stable/c/66f769762f65d957f688f3258755c6ec410bf710","https://git.kernel.org/stable/c/042915c1bfedd684c1d98a841794ee203200571a","https://git.kernel.org/stable/c/ffc9cab7243f8151be37966301307bfd3cda2db3","https://git.kernel.org/stable/c/b34cb54923a6e5ddefbaf358c85c922c6ab456e2","https://git.kernel.org/stable/c/806c7b53414934ba2a39449b31fd1a038e500273"],"weaknesses":["CWE-667"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49305.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49305","state":"PUBLISHED","datePublished":"2025-02-26T02:10:38.212Z","dateUpdated":"2026-05-11T18:57:07.127Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T02:08:31.535Z"},"containers":{"cna":{"title":"drivers: staging: rtl8192u: Fix deadlock in ieee80211_beacons_stop()","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8fc8598e61f6f384f3eaf1d9b09500c12af47b37","status":"affected","lessThan":"b465bb2ebf666116c1ac745cb80c65154dc0d27e","versionType":"git"},{"version":"8fc8598e61f6f384f3eaf1d9b09500c12af47b37","status":"affected","lessThan":"1fbe033c52480f7954c057510040fa6286c4ea25","versionType":"git"},{"version":"8fc8598e61f6f384f3eaf1d9b09500c12af47b37","status":"affected","lessThan":"66f769762f65d957f688f3258755c6ec410bf710","versionType":"git"},{"version":"8fc8598e61f6f384f3eaf1d9b09500c12af47b37","status":"affected","lessThan":"042915c1bfedd684c1d98a841794ee203200571a","versionType":"git"},{"version":"8fc8598e61f6f384f3eaf1d9b09500c12af47b37","status":"affected","lessThan":"ffc9cab7243f8151be37966301307bfd3cda2db3","versionType":"git"},{"version":"8fc8598e61f6f384f3eaf1d9b09500c12af47b37","status":"affected","lessThan":"b34cb54923a6e5ddefbaf358c85c922c6ab456e2","versionType":"git"},{"version":"8fc8598e61f6f384f3eaf1d9b09500c12af47b37","status":"affected","lessThan":"806c7b53414934ba2a39449b31fd1a038e500273","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.33","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.33","versionType":"semver"},{"version":"4.19.247","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.198","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.122","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.47","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.15","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18.4","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/b465bb2ebf666116c1ac745cb80c65154dc0d27e"},{"url":"https://git.kernel.org/stable/c/1fbe033c52480f7954c057510040fa6286c4ea25"},{"url":"https://git.kernel.org/stable/c/66f769762f65d957f688f3258755c6ec410bf710"},{"url":"https://git.kernel.org/stable/c/042915c1bfedd684c1d98a841794ee203200571a"},{"url":"https://git.kernel.org/stable/c/ffc9cab7243f8151be37966301307bfd3cda2db3"},{"url":"https://git.kernel.org/stable/c/b34cb54923a6e5ddefbaf358c85c922c6ab456e2"},{"url":"https://git.kernel.org/stable/c/806c7b53414934ba2a39449b31fd1a038e500273"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T18:57:07.127Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"4.19.247"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"5.4.198"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"5.10.122"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"5.15.47"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"5.17.15"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"5.18.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"5.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2022-49305","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:44:29.816182Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-667","lang":"en","type":"CWE","description":"CWE-667 Improper Locking"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T19:46:58.552Z"}}]}}}