{"schema":"threatline.record/2","record":{"id":"CVE-2026-93784","aliases":[],"summary":"wifi: cfg80211: validate IEs in cfg80211_wext_siwgenie()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: validate IEs in cfg80211_wext_siwgenie()\n\nThe KASAN allocation trace shows that a malformed IE buffer is\nstored via SIOCSIWGENIE (cfg80211_wext_siwgenie()) without any\nvalidation. The crash trace shows that a subsequent SIOCSIWESSID\ntriggers a connection attempt which calls cfg80211_sme_get_conn_ies()\nto process the stored IE buffer, causing:\n\n - An out-of-bounds read in skip_ie() which reads ies[pos+1]\n   (the length byte) past the end of the 1-byte buffer.\n\n - An integer underflow in the memcpy size argument when offs\n   returned by ieee80211_ie_split() exceeds ies_len, causing\n   unsigned subtraction to wrap to SIZE_MAX and triggering a\n   fortify panic.\n\nFix this by validating the IE buffer in cfg80211_wext_siwgenie()\nbefore storing it.\n\n[drop unnecessary ie_len check, update commit message]","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93784","source_modified_at":"2026-10-03T10:57:19.164Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Linux","vendor":"Linux","versions":[{"version":"f21293549f60f88c74fcb9944737f11048896dc4","lessThan":"269498ce6c1e2132b072aa0c8660404926008f03","status":"affected","versionType":"git"},{"version":"f21293549f60f88c74fcb9944737f11048896dc4","lessThan":"685082f4be77f4657b498ebbe9f942ef65c492cf","status":"affected","versionType":"git"},{"version":"f21293549f60f88c74fcb9944737f11048896dc4","lessThan":"8b921a8993469a3482e0c67b5ce5cb6ce93f5f61","status":"affected","versionType":"git"},{"version":"f21293549f60f88c74fcb9944737f11048896dc4","lessThan":"d01f1600e8b075aa17adb751ac9881bb6ee40dcc","status":"affected","versionType":"git"},{"version":"f21293549f60f88c74fcb9944737f11048896dc4","lessThan":"c970879e03b23a27df42caf7ba506485a165fb96","status":"affected","versionType":"git"},{"version":"f21293549f60f88c74fcb9944737f11048896dc4","lessThan":"01cc395cecfaa73134d39fb9a401d9605d8bb2c5","status":"affected","versionType":"git"},{"version":"f21293549f60f88c74fcb9944737f11048896dc4","lessThan":"a2f5286ca4f304d3fd469f01b96b518608912a5c","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93784","source_modified_at":"2026-10-03T10:57:19.164Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Linux","vendor":"Linux","versions":[{"version":"2.6.32","status":"affected"},{"version":"0","lessThan":"2.6.32","status":"unaffected","versionType":"semver"},{"version":"5.10.271","lessThanOrEqual":"5.10.*","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-2026-93784","source_modified_at":"2026-10-03T10:57:19.164Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"269498ce6c1e2132b072aa0c8660404926008f03","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93784","source_modified_at":"2026-10-03T10:57:19.164Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"685082f4be77f4657b498ebbe9f942ef65c492cf","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93784","source_modified_at":"2026-10-03T10:57:19.164Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"8b921a8993469a3482e0c67b5ce5cb6ce93f5f61","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93784","source_modified_at":"2026-10-03T10:57:19.164Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"01cc395cecfaa73134d39fb9a401d9605d8bb2c5","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00173,"percentile":0.06362,"score_date":"2026-10-23"},"published_at":"2026-09-24T16:02:18.067Z","modified_at":"2026-10-03T10:57:19.164Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-93784","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-03T10:57:19.164Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-93784","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/269498ce6c1e2132b072aa0c8660404926008f03"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/685082f4be77f4657b498ebbe9f942ef65c492cf"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/8b921a8993469a3482e0c67b5ce5cb6ce93f5f61"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d01f1600e8b075aa17adb751ac9881bb6ee40dcc"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/c970879e03b23a27df42caf7ba506485a165fb96"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/01cc395cecfaa73134d39fb9a401d9605d8bb2c5"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/a2f5286ca4f304d3fd469f01b96b518608912a5c"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-03T10:57:19.164Z","content_hash":"dd8dcb6d560aec8c09b7f60c9c673c7c8aeb8df851cd0d8ffda65641812c750d"}}