{"id":"CVE-2026-98459","published":"2026-10-18T16:16:56.327","lastModified":"2026-10-19T10:18:55.390","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: balance the parent hold in hci_bind_bis()\n\nhci_conn_link() takes a lifetime reference to its parent with\nhci_conn_get(), but only takes an operational hold on the child.\nhci_conn_unlink() later balances both a hold and a reference on the\nparent.\n\nThe SCO and CIS paths pass a parent acquired from a connect helper, so\nit already has a hold. For an additional BIS, hci_bind_bis() obtains the\nparent from hci_conn_hash_lookup_big(), which returns a bare pointer.\nUnlinking the child then drops the parent's existing hold and can\nschedule it for disconnection while its socket is still using it.\n\nTake a hold on the parent before linking it and drop that hold if linking\nfails. A successful link transfers the hold to hci_conn_unlink().","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/03a91cdf6862fb351a74f035ad21e70112438552","tags":[]},{"url":"https://git.kernel.org/stable/c/4c94557dd02569efa6c1072a0439addaef9a5224","tags":[]},{"url":"https://git.kernel.org/stable/c/4e49206d9574a4c109480198e73aea34ad0ed7f6","tags":[]},{"url":"https://git.kernel.org/stable/c/bbcd723ee7a84bc868142fd57717af88e54e555a","tags":[]},{"url":"https://git.kernel.org/stable/c/ff28e6c67143c76ef50c3eac01f2fad411705f71","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}