{"id":"CVE-2026-72334","summary":"Bluetooth: ISO: fix malformed ISO_END/CONT handling","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: fix malformed ISO_END/CONT handling\n\nCore specification (Part C vol 4 sec 5.4.5) does not exclude empty\nISO_CONT, ISO_END packets.  We currently reject them if they are last.\n\nIf controller sends malformed sequence\n\n    ISO_START -\u003e rx_len = 4, ISO_CONT skb-\u003elen 4, ISO_START\n\nthat ends payload in ISO_CONT, we leak conn-\u003erx_skb. If controller sends\ntoo long ISO_END, we panic on skb_put. If controller sends too short\nISO_END we accept it.\n\nFix by marking unfinished ISO_START via conn-\u003erx_skb != NULL.  Check\nskb-\u003elen properly before skb_put.  Combine the ISO_CONT/END code paths\nas they require the same initial checks. Reject too short ISO_END\npackets.","modified":"2026-10-05T02:30:18.259375124Z","published":"2026-08-15T05:55:43.160Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72334.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/49aeb54e3c912ef785311264a51ab9f3698e421b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5e53e285f8c989662e34d4938c728a94226bff34"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7250b6b5ba9b737cff2c2c1d0760360c7b6bca00"},{"type":"WEB","url":"https://git.kernel.org/stable/c/990e65eb9387c4ddfa7f68782b6644c2c35d489f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d2df29dc9abda2fc10ff522eac0969f5b77b3637"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e054c1a6ae7310d2815778fddb87da616e11c255"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72334.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72334"},{"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":"d2df29dc9abda2fc10ff522eac0969f5b77b3637"},{"fixed":"7250b6b5ba9b737cff2c2c1d0760360c7b6bca00"},{"fixed":"49aeb54e3c912ef785311264a51ab9f3698e421b"},{"fixed":"5e53e285f8c989662e34d4938c728a94226bff34"},{"fixed":"990e65eb9387c4ddfa7f68782b6644c2c35d489f"},{"fixed":"e054c1a6ae7310d2815778fddb87da616e11c255"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-72334.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.0.0"},{"fixed":"6.1.189"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.158"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.111"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.53"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-72334.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}