{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74670","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-15T05:44:03.925Z","datePublished":"2026-08-22T15:32:40.850Z","dateUpdated":"2026-08-22T15:32:40.850Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-22T15:32:40.850Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: stop estimator after disabled calc phase\n\nIPVS estimator kthread 0 starts with zeroed chain and tick limits until\nits initial calculation phase completes. If network namespace teardown\nclears ipvs->enable during that phase, ip_vs_est_calc_phase() can return\nwithout installing positive limits.\n\nThe kthread can then continue into its main loop and drain\nest_temp_list with zero chain_max, tick_max and est_max_count values.\nEach enqueue consumes one available tick row, but est_count never\nreaches the zero est_max_count value. After all rows are consumed, the\nrow lookup returns IPVS_EST_NTICKS and ip_vs_enqueue_estimator() writes\npast the ticks and tick_len arrays.\n\nExit kthread 0 after the calculation phase if the kthread is stopping or\nIPVS has been disabled. That keeps temporary estimators from being\ndrained after the limits failed to initialize.\n\nEstimator kthreads can now self-exit before teardown or reload stops\nkd->task. Keep an extra task reference after creation and release it\nwith kthread_stop_put(), so kd->task remains valid until the stop paths\nconsume that reference."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/ipvs/ip_vs_est.c"],"versions":[{"version":"705dd34440812735ece298eb5bc153fde9544d42","lessThan":"d5122a2b2601145975d387006e517c56896e310e","status":"affected","versionType":"git"},{"version":"705dd34440812735ece298eb5bc153fde9544d42","lessThan":"de98dc5ef94b83bbb444c670c253ea02ca0f5e43","status":"affected","versionType":"git"},{"version":"705dd34440812735ece298eb5bc153fde9544d42","lessThan":"e7f34f29b330265d456943bf0b984dcecfcef9af","status":"affected","versionType":"git"},{"version":"705dd34440812735ece298eb5bc153fde9544d42","lessThan":"2335dedc1922dfa889ca1f9f70370924e8e79a08","status":"affected","versionType":"git"},{"version":"705dd34440812735ece298eb5bc153fde9544d42","lessThan":"558f67f1340f803a346ecd14a69c49653111c5f4","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/ipvs/ip_vs_est.c"],"versions":[{"version":"6.2","status":"affected"},{"version":"0","lessThan":"6.2","status":"unaffected","versionType":"semver"},{"version":"6.6.152","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.104","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.45","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.9","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.152"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.12.104"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.18.45"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"7.1.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/d5122a2b2601145975d387006e517c56896e310e"},{"url":"https://git.kernel.org/stable/c/de98dc5ef94b83bbb444c670c253ea02ca0f5e43"},{"url":"https://git.kernel.org/stable/c/e7f34f29b330265d456943bf0b984dcecfcef9af"},{"url":"https://git.kernel.org/stable/c/2335dedc1922dfa889ca1f9f70370924e8e79a08"},{"url":"https://git.kernel.org/stable/c/558f67f1340f803a346ecd14a69c49653111c5f4"}],"title":"ipvs: stop estimator after disabled calc phase","x_generator":{"engine":"bippy-1.2.0"}}}}