{"id":"CVE-2026-46187","state":"PUBLISHED","title":"wifi: rsi: fix kthread lifetime race between self-exit and external-stop","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rsi: fix kthread lifetime race between self-exit and external-stop\n\nRSI driver use both self-exit(kthread_complete_and_exit) and external-stop\n(kthread_stop) when killing a kthread. Generally, kthread_stop() is called\nfirst, and in this case, no particular issues occur.\n\nHowever, in rare instances where kthread_complete_and_exit() is called\nfirst and then kthread_stop() is called, a UAF occurs because the kthread\nobject, which has already exited and been freed, is accessed again.\n\nTherefore, to prevent this with minimal modification, you must remove\nkthread_stop() and change the code to wait until the self-exit operation\nis completed.","publishedAt":"2026-05-28T09:36:41.427Z","updatedAt":"2026-10-15T01:21:10.806Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4c62764d0fc21a34ffc44eec1210038c3a2e4473","status":"affected","lessThan":"4ac3095da22fc50e51ec10c3b8323c21ab3e441a","versionType":"git"},{"version":"4c62764d0fc21a34ffc44eec1210038c3a2e4473","status":"affected","lessThan":"9dfe8a4458a063c6433526bc59112a169eee1aa3","versionType":"git"},{"version":"4c62764d0fc21a34ffc44eec1210038c3a2e4473","status":"affected","lessThan":"4f697813162d5f9151726a6d2bee82bffe4b0256","versionType":"git"},{"version":"4c62764d0fc21a34ffc44eec1210038c3a2e4473","status":"affected","lessThan":"95fcb436586dc3c2983537d557ac05bbc6a027f3","versionType":"git"},{"version":"4c62764d0fc21a34ffc44eec1210038c3a2e4473","status":"affected","lessThan":"16d9f674c619838bdeae42abc0929c9c5477ea1f","versionType":"git"},{"version":"4c62764d0fc21a34ffc44eec1210038c3a2e4473","status":"affected","lessThan":"4f9a4ae8d2c198f01611ea376034c326ef43ab56","versionType":"git"},{"version":"4c62764d0fc21a34ffc44eec1210038c3a2e4473","status":"affected","lessThan":"4f4c9b13c485abd0a2d2c97f9db339d1dd8e147f","versionType":"git"},{"version":"4c62764d0fc21a34ffc44eec1210038c3a2e4473","status":"affected","lessThan":"db57a1aa54ff68669781976e4edb045e09e2b65b","versionType":"git"},{"version":"d8f70ad66032363e3edceee81a7be2aaccb2d7f5","status":"affected","versionType":"git"},{"version":"ec759c0015fb7d4f5c7cb5711d2c8905724c7983","status":"affected","versionType":"git"},{"version":"c8ed05b1d8520f40395916438da9b38ce937a896","status":"affected","versionType":"git"},{"version":"ad78e2e057ab8d914a2b5e3e6acf29c3c8a428a3","status":"affected","versionType":"git"},{"version":"de1fd69b6541ff61177114d63af7ea719c426cf0","status":"affected","versionType":"git"},{"version":"3.18.139","status":"affected","lessThan":"3.19","versionType":"semver"},{"version":"4.4.179","status":"affected","lessThan":"4.5","versionType":"semver"},{"version":"4.9.170","status":"affected","lessThan":"4.10","versionType":"semver"},{"version":"4.14.113","status":"affected","lessThan":"4.15","versionType":"semver"},{"version":"4.19.36","status":"affected","lessThan":"4.20","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/rsi/rsi_common.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.20","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.20","versionType":"semver"},{"version":"5.10.258","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.140","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.88","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.30","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.7","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/rsi/rsi_common.h"]}],"references":["https://git.kernel.org/stable/c/4ac3095da22fc50e51ec10c3b8323c21ab3e441a","https://git.kernel.org/stable/c/9dfe8a4458a063c6433526bc59112a169eee1aa3","https://git.kernel.org/stable/c/4f697813162d5f9151726a6d2bee82bffe4b0256","https://git.kernel.org/stable/c/95fcb436586dc3c2983537d557ac05bbc6a027f3","https://git.kernel.org/stable/c/16d9f674c619838bdeae42abc0929c9c5477ea1f","https://git.kernel.org/stable/c/4f9a4ae8d2c198f01611ea376034c326ef43ab56","https://git.kernel.org/stable/c/4f4c9b13c485abd0a2d2c97f9db339d1dd8e147f","https://git.kernel.org/stable/c/db57a1aa54ff68669781976e4edb045e09e2b65b","https://cert-portal.siemens.com/productcert/html/ssa-784472.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46187.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46187","state":"PUBLISHED","datePublished":"2026-05-28T09:36:41.427Z","dateUpdated":"2026-10-15T01:21:10.806Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.104Z"},"containers":{"cna":{"title":"wifi: rsi: fix kthread lifetime race between self-exit and external-stop","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rsi: fix kthread lifetime race between self-exit and external-stop\n\nRSI driver use both self-exit(kthread_complete_and_exit) and external-stop\n(kthread_stop) when killing a kthread. Generally, kthread_stop() is called\nfirst, and in this case, no particular issues occur.\n\nHowever, in rare instances where kthread_complete_and_exit() is called\nfirst and then kthread_stop() is called, a UAF occurs because the kthread\nobject, which has already exited and been freed, is accessed again.\n\nTherefore, to prevent this with minimal modification, you must remove\nkthread_stop() and change the code to wait until the self-exit operation\nis 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