{"id":"CVE-2026-68389","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-68389","summary":"Bluetooth: hci_qca: Clear memdump state on invalid dump size","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_qca: Clear memdump state on invalid dump size\n\nqca_controller_memdump() allocates qca->qca_memdump before processing\nthe first dump packet. For a sequence-zero packet it then disables IBS,\nmarks memdump collection active, and reads the advertised dump size.\n\nIf the controller reports a zero dump size, the error path frees the\nlocal qca_memdump object and returns without clearing qca->qca_memdump\nor undoing the collection state. A later memdump work item initializes\nits local pointer from qca->qca_memdump and skips allocation when that\npointer is non-NULL, so it can operate on freed memory. The stale\ncollection and IBS-disabled flags can also leave waiters or later\ntransmit handling blocked behind an aborted dump.\n\nClear the saved pointer and memdump state before returning from the\ninvalid-size path, matching the cleanup used when hci_devcd_init() fails.\n\nA static analysis checker reported the stale memdump state, and manual\nsource review confirmed the invalid-size failure path.","published":"2026-08-10T12:04:08.306Z","modified":"2026-08-14T04:04:12.881531446Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.6.148"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/069258d5111eed9ac9586bee42d03d38e2975715"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2363a757694752426fc47f3eadde15cf5f791fa5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5a3945e8dea6c9a8ec9e981169ac9487e1d6ad6a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bf587a10c33e5571a299742e45bc18960b9912e7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cefb44c367b2b52e50f97bc8526d39df9bcf5e60"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68389.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68389"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-14T04:04:12.881531446Z"}}