{"schema":"threatline.record/2","record":{"id":"CVE-2026-93288","aliases":[],"summary":"netfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state\n\nsashiko reports: \"nfnl_log_net_exit() calls nf_log_unset(), which\nclears the logger pointer without an RCU grace period.  Immediately after,\nops_free_list() frees the per-net state while concurrent packets might\nstill be executing nf_log_packet() under rcu_read_lock().\"\n\nClear the pointer via .pre_exit to make sure rcu readers have completed\nbefore pernet storage is free'd.  The change in nf_log_syslog.c is only\ndone for consistency: it doesn't use pernet data.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93288","source_modified_at":"2026-10-03T10:57:14.695Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Linux","vendor":"Linux","versions":[{"version":"c83fa19603bdaeef17b815713dbbe3230c8a34ee","lessThan":"ba2e246aa294f9acd86194ea87fb6834ed0a37ac","status":"affected","versionType":"git"},{"version":"c83fa19603bdaeef17b815713dbbe3230c8a34ee","lessThan":"5570d6c8b320dbcc602617ee08c27ce752fed65a","status":"affected","versionType":"git"},{"version":"c83fa19603bdaeef17b815713dbbe3230c8a34ee","lessThan":"3b9aa62d78ce80de47af2db472ff452398755213","status":"affected","versionType":"git"},{"version":"c83fa19603bdaeef17b815713dbbe3230c8a34ee","lessThan":"f4461654374576e9d5d0245fd534c46ad8509051","status":"affected","versionType":"git"},{"version":"c83fa19603bdaeef17b815713dbbe3230c8a34ee","lessThan":"dc20050b6b12ca58066715d088e1a537535d938d","status":"affected","versionType":"git"},{"version":"c83fa19603bdaeef17b815713dbbe3230c8a34ee","lessThan":"33d1469b0124cc0baaea7a2032123b77a81e0940","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93288","source_modified_at":"2026-10-03T10:57:14.695Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Linux","vendor":"Linux","versions":[{"version":"4.12","status":"affected"},{"version":"0","lessThan":"4.12","status":"unaffected","versionType":"semver"},{"version":"5.15.222","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93288","source_modified_at":"2026-10-03T10:57:14.695Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"5570d6c8b320dbcc602617ee08c27ce752fed65a","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93288","source_modified_at":"2026-10-03T10:57:14.695Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"3b9aa62d78ce80de47af2db472ff452398755213","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93288","source_modified_at":"2026-10-03T10:57:14.695Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"33d1469b0124cc0baaea7a2032123b77a81e0940","basis":"first unaffected version stated in the CVE record"}],"cvss":7.8,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00129,"percentile":0.02318,"score_date":"2026-10-23"},"published_at":"2026-09-24T16:02:12.144Z","modified_at":"2026-10-03T10:57:14.695Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-93288","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-03T10:57:14.695Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-93288","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/ba2e246aa294f9acd86194ea87fb6834ed0a37ac"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/5570d6c8b320dbcc602617ee08c27ce752fed65a"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/3b9aa62d78ce80de47af2db472ff452398755213"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/f4461654374576e9d5d0245fd534c46ad8509051"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/dc20050b6b12ca58066715d088e1a537535d938d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/33d1469b0124cc0baaea7a2032123b77a81e0940"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-03T10:57:14.695Z","content_hash":"f8d0563a80e627662d48a8a2573350f3832a1310ea3b0f0298bf684f65aa6835"}}