{"id":"CVE-2026-63946","revision":null,"records":[{"revision":"dd05396f8cc04bb282914ff09dd09b51","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-63946","aliases":[],"title":"Bluetooth: ISO: fix UAF in iso_recv_frame","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: fix UAF in iso_recv_frame\n\niso_recv_frame reads conn->sk under iso_conn_lock but releases the lock\nbefore using sk, with no reference held. A concurrent iso_sock_kill()\ncan free sk in that window, causing use-after-free on sk->sk_state and\nsock_queue_rcv_skb().\n\nFix by replacing the bare pointer read with iso_sock_hold(conn), which\ncalls sock_hold() while the spinlock is held, atomically elevating the\nrefcount before the lock drops. Add a drop_put label so sock_put() is\ncalled on all exit paths where the hold succeeded.","state":0,"publishedAt":"2026-07-19T14:55:40.577+00:00","modifiedAt":"2026-10-19T20:17:58.71+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\": \"ccf74f2390d60a2f9a75ef496d2564abb478f46a\",\n \"lessThan\": \"c57ea90f203c8b8b41a474f19a09000d0f841436\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ccf74f2390d60a2f9a75ef496d2564abb478f46a\",\n \"lessThan\": \"119fb6f80c44dc1c65d604cf28e64c56bd9b6568\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ccf74f2390d60a2f9a75ef496d2564abb478f46a\",\n \"lessThan\": \"b04ec131325baf4ea4577d6c6e6b86cf092e3731\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ccf74f2390d60a2f9a75ef496d2564abb478f46a\",\n \"lessThan\": \"c318aa51830a3d2cc1229968fe521441c97356cd\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ccf74f2390d60a2f9a75ef496d2564abb478f46a\",\n \"lessThan\": \"1a6b803b00ccdd7666506adbe01ddae1c72d1ca9\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ccf74f2390d60a2f9a75ef496d2564abb478f46a\",\n \"lessThan\": \"47f23a259517abbdb8032c057a1e8a6bf3734878\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\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\": \"6.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"6.0\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.176\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.143\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.93\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.35\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0.12\",\n \"lessThanOrEqual\": \"7.0.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1\",\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/c57ea90f203c8b8b41a474f19a09000d0f841436","https://git.kernel.org/stable/c/119fb6f80c44dc1c65d604cf28e64c56bd9b6568","https://git.kernel.org/stable/c/b04ec131325baf4ea4577d6c6e6b86cf092e3731","https://git.kernel.org/stable/c/c318aa51830a3d2cc1229968fe521441c97356cd","https://git.kernel.org/stable/c/1a6b803b00ccdd7666506adbe01ddae1c72d1ca9","https://git.kernel.org/stable/c/47f23a259517abbdb8032c057a1e8a6bf3734878"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-63946","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-63946","identifiers":["CVE-2026-63946"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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