{"id":"CVE-2026-98456","published":"2026-10-18T16:16:56.003","lastModified":"2026-10-19T10:18:54.987","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: mgmt: fix race in read_unconf_index_list()\n\nread_unconf_index_list() counts unconfigured controllers before allocating\nits response, then checks the device flags again while filling it.\n\nhci_dev_list_lock stabilizes list membership, but it does not serialize the\nper-device flags. During asynchronous controller setup, the worker can set\nHCI_UNCONFIGURED and clear HCI_SETUP between the two passes. A controller\nomitted from the allocation count can then become eligible for the fill\npass, causing an out-of-bounds write to rp->index[].\n\nAllocate space for every device on hci_dev_list. Since list membership\ncannot change while hci_dev_list_lock is held, the response remains large\nenough regardless of flag transitions. The reported count and response\nlength still include only eligible unconfigured controllers.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/2e8bba0360d1379bfa8da47c8f5dadbb10a3fba1","tags":[]},{"url":"https://git.kernel.org/stable/c/416546cd6a54e9b68f2b91bc680b1ee17dcd77a1","tags":[]},{"url":"https://git.kernel.org/stable/c/524e0450dd9a396f99a81b045219b0e2ea0dab57","tags":[]},{"url":"https://git.kernel.org/stable/c/8ddf962c76432a10a6cb80042875cbc48a9c056b","tags":[]},{"url":"https://git.kernel.org/stable/c/b5dbb41b212c50c095a4dbee3017a84fe94f033b","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}