{"id":"CVE-2022-49315","summary":"drivers: staging: rtl8192e: Fix deadlock in rtllib_beacons_stop()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers: staging: rtl8192e: Fix deadlock in rtllib_beacons_stop()\n\nThere is a deadlock in rtllib_beacons_stop(), which is shown\nbelow:\n\n   (Thread 1)              |      (Thread 2)\n                           | rtllib_send_beacon()\nrtllib_beacons_stop()      |  mod_timer()\n spin_lock_irqsave() //(1) |  (wait a time)\n ...                       | rtllib_send_beacon_cb()\n del_timer_sync()          |  spin_lock_irqsave() //(2)\n (wait timer to stop)      |  ...\n\nWe hold ieee-\u003ebeacon_lock in position (1) of thread 1 and\nuse del_timer_sync() to wait timer to stop, but timer handler\nalso need ieee-\u003ebeacon_lock in position (2) of thread 2.\nAs a result, rtllib_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.","modified":"2026-04-02T08:27:29.612158Z","published":"2025-02-26T02:10:43.082Z","related":["SUSE-SU-2025:1027-1","SUSE-SU-2025:1176-1","SUSE-SU-2025:1183-1","SUSE-SU-2025:1194-1","SUSE-SU-2025:1241-1","SUSE-SU-2025:1263-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49315.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/08bacf871c019163ccd1389d0bc957a43324967a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0f69d7d5e918aa43423d86bd17ddb11b1b5e8ada"},{"type":"WEB","url":"https://git.kernel.org/stable/c/381045dc64d23a2229c47c5524c06bfc33d34446"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4681129fda9e8555392eaaadb239ec6a6e2b3e12"},{"type":"WEB","url":"https://git.kernel.org/stable/c/46c861009bf437a18417df24cea0d181741b7d72"},{"type":"WEB","url":"https://git.kernel.org/stable/c/64b05fa212c7e4d057676e8b7e7120c6eb2f615b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9b6bdbd9337de3917945847bde262a34a87a6303"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fef451f0fbbe85dbd2962b18379d02e2965610db"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ffd4c4d5293e4985092ea45ba21cad9326e2e434"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49315.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49315"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"94a799425eee8225a1e3fbe5f473d2ef04002577"},{"fixed":"4681129fda9e8555392eaaadb239ec6a6e2b3e12"},{"fixed":"381045dc64d23a2229c47c5524c06bfc33d34446"},{"fixed":"08bacf871c019163ccd1389d0bc957a43324967a"},{"fixed":"64b05fa212c7e4d057676e8b7e7120c6eb2f615b"},{"fixed":"0f69d7d5e918aa43423d86bd17ddb11b1b5e8ada"},{"fixed":"fef451f0fbbe85dbd2962b18379d02e2965610db"},{"fixed":"46c861009bf437a18417df24cea0d181741b7d72"},{"fixed":"ffd4c4d5293e4985092ea45ba21cad9326e2e434"},{"fixed":"9b6bdbd9337de3917945847bde262a34a87a6303"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49315.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"}]}