{"id":"CVE-2026-64408","summary":"Bluetooth: bnep: pin L2CAP connection during netdev registration","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: bnep: pin L2CAP connection during netdev registration\n\nbnep_add_connection() reads the L2CAP connection without holding the\nchannel lock, then passes its HCI device to register_netdev(). Controller\nteardown can clear and release that connection concurrently, leaving the\nnetwork device registration path to dereference a freed parent device.\n\nTake a reference to the L2CAP connection while holding the channel lock.\nRetain it until register_netdev() has taken the parent device reference.","modified":"2026-07-28T04:02:47.861429993Z","published":"2026-07-25T08:50:49.807Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64408.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/390b5db3ff8745187f094c4e915663b7b1f98944"},{"type":"WEB","url":"https://git.kernel.org/stable/c/46a88784c4c9b96954dd86f747ce93f65efa1302"},{"type":"WEB","url":"https://git.kernel.org/stable/c/551ae773ec64045b4e72099132654887e0270bcc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/563a8573047182f550b1e1e030615755cd8c41da"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a6b22dbd80926556290ad2243be25218d6956a19"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ae215c5b6422d8eda443b861b124bd1be6969c31"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bb067a99a0356196c0b89a95721985485ebce5a5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/df22adc7eafc22e651561813c11dc51a796b12ee"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64408.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64408"},{"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":"65f53e9802dbfae0e5758a91793c3f5f8bece49b"},{"fixed":"390b5db3ff8745187f094c4e915663b7b1f98944"},{"fixed":"46a88784c4c9b96954dd86f747ce93f65efa1302"},{"fixed":"551ae773ec64045b4e72099132654887e0270bcc"},{"fixed":"ae215c5b6422d8eda443b861b124bd1be6969c31"},{"fixed":"df22adc7eafc22e651561813c11dc51a796b12ee"},{"fixed":"a6b22dbd80926556290ad2243be25218d6956a19"},{"fixed":"563a8573047182f550b1e1e030615755cd8c41da"},{"fixed":"bb067a99a0356196c0b89a95721985485ebce5a5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64408.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.13.0"},{"fixed":"5.10.261"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.212"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.178"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.145"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.96"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.39"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64408.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}