{"id":"CVE-2026-74541","revision":null,"records":[{"revision":"33f2e18fe4b84a8e8f2e8d71674f6195","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74541","aliases":[],"title":"Bluetooth: ISO: clear iso_data always when detaching conn from hcon","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: clear iso_data always when detaching conn from hcon\n\nWhen setting conn->hcon = NULL, also conn->hcon->iso_data = NULL is\nnecessary, otherwise later iso_conn_free() will UAF.\n\nFix clearing of iso_data in iso_sock_disconn()\n\nFixes KASAN: slab-use-after-free in iso_conn_hold_unless_zero on\niso_sock_release() followed by hci_abort_conn_sync().","state":0,"publishedAt":"2026-08-15T12:27:52.12+00:00","modifiedAt":"2026-10-16T19:05:54.748+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"net/bluetooth/iso.c\"\n ],\n \"versions\": [\n {\n \"version\": \"fbdc4bc47268953c80853489f696e02d61f9a2c6\",\n \"lessThan\": \"cc1d39946d62bc568551dfb81149724de1e91338\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"fbdc4bc47268953c80853489f696e02d61f9a2c6\",\n \"lessThan\": \"7b51a9c25e9698b64df9f2218f10eecf7dc7e2d0\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"fbdc4bc47268953c80853489f696e02d61f9a2c6\",\n \"lessThan\": \"63c0f396a18b767eb28e895eb95bbdce6c172c59\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"fbdc4bc47268953c80853489f696e02d61f9a2c6\",\n \"lessThan\": \"69a4a7b162b3db6ac337e3094cdee38f24d42ff7\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"fbdc4bc47268953c80853489f696e02d61f9a2c6\",\n \"lessThan\": \"d57e506f6a1e3929611340fae87c1e4823f4d85c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"c03a10bd5b6ccb22921e04bcddc987410df7e7a9\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6.5.12\",\n \"lessThan\": \"6.6\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"net/bluetooth/iso.c\"\n ],\n \"versions\": [\n {\n \"version\": \"6.6\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"6.6\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.151\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.103\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.44\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1.8\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/cc1d39946d62bc568551dfb81149724de1e91338","https://git.kernel.org/stable/c/7b51a9c25e9698b64df9f2218f10eecf7dc7e2d0","https://git.kernel.org/stable/c/63c0f396a18b767eb28e895eb95bbdce6c172c59","https://git.kernel.org/stable/c/69a4a7b162b3db6ac337e3094cdee38f24d42ff7","https://git.kernel.org/stable/c/d57e506f6a1e3929611340fae87c1e4823f4d85c"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74541","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74541","identifiers":["CVE-2026-74541"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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