{"id":"CVE-2026-64128","summary":"Bluetooth: ISO: drop ISO_END frames received without prior ISO_START","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: drop ISO_END frames received without prior ISO_START\n\nISO data PDUs carry a packet-boundary flag indicating START, CONT, END\nor SINGLE. The ISO_CONT branch of iso_recv() guards against a missing\nISO_START by checking conn-\u003erx_len before touching conn-\u003erx_skb, but\nISO_END does not.\n\nIf a peer sends an ISO_END as the first packet on a fresh ISO\nconnection, conn-\u003erx_skb is still NULL and conn-\u003erx_len is zero, so\nskb_put(conn-\u003erx_skb, ...) dereferences NULL and oopses. For BIS,\nwhere receivers sync to a broadcaster without pairing, any broadcaster\non the air can trigger this.\n\nMirror the ISO_CONT check at the top of ISO_END so a stray end fragment\nis logged and dropped instead of crashing the host.","modified":"2026-07-21T03:47:50.448311766Z","published":"2026-07-19T15:40:24.678Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64128.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1c3d1e1696b72579b970e17999c503a14535205b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/39f4a82e80c8f5ed2d6952d73fbafc895721a728"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3af41ee7ebecb0d5c8a504861f6cfad31345310f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/61f2410a96dee808029e2ae4d6ef2dd635f3477f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/84c24fb151fc1179355296d7ff29129ac7c42129"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e3a799881c12d27596232636a607e2e3fa448d63"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64128.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64128"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"ccf74f2390d60a2f9a75ef496d2564abb478f46a"},{"fixed":"1c3d1e1696b72579b970e17999c503a14535205b"},{"fixed":"3af41ee7ebecb0d5c8a504861f6cfad31345310f"},{"fixed":"39f4a82e80c8f5ed2d6952d73fbafc895721a728"},{"fixed":"61f2410a96dee808029e2ae4d6ef2dd635f3477f"},{"fixed":"e3a799881c12d27596232636a607e2e3fa448d63"},{"fixed":"84c24fb151fc1179355296d7ff29129ac7c42129"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-64128.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.0.0"},{"fixed":"6.1.175"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.142"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.92"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.34"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.11"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-64128.json"}}],"schema_version":"1.7.5"}