CVE-2026-98459Bluetooth: ISO: balance the parent hold in hci_bind_bis()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: balance the parent hold in hci_bind_bis() hci_conn_link() takes a lifetime reference to its parent with hci_conn_get(), but only takes an operational hold on the child. hci_conn_unlink() later balances both a hold and a reference on the parent. The SCO and CIS paths pass a parent acquired from a connect helper, so it already has a hold. For an additional BIS, hci_bind_bis() obtains the parent from hci_conn_hash_lookup_big(), which returns a bare pointer. Unlinking the child then drops the parent's existing hold and can schedule it for disconnection while its socket is still using it. Take a hold on the parent before linking it and drop that hold if linking fails. A successful link transfers the hold to hci_conn_unlink().
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Linux Linux linux:linux (from the name) | from 11dc486ed5d4626e6b92a23b67ed76cb6c48bfc9 before ff28e6c67143c76ef50c3eac01f2fad411705f71; from fa224d0c094a458e9ebf5ea9b1c696136b7af427 before 03a91cdf6862fb351a74f035ad21e70112438552; from fa224d0c094a458e9ebf5ea9b1c696136b7af427 before 4e49206d9574a4c109480198e73aea34ad0ed7f6; from fa224d0c094a458e9ebf5ea9b1c696136b7af427 before bbcd723ee7a84bc868142fd57717af88e54e555a; from fa224d0c094a458e9ebf5ea9b1c696136b7af427 before 4c94557dd02569efa6c1072a0439addaef9a5224; from 6.6.67 before 6.6.158 | CNA record |
References
- https://git.kernel.org/stable/c/ff28e6c67143c76ef50c3eac01f2fad411705f71
- https://git.kernel.org/stable/c/03a91cdf6862fb351a74f035ad21e70112438552
- https://git.kernel.org/stable/c/4e49206d9574a4c109480198e73aea34ad0ed7f6
- https://git.kernel.org/stable/c/bbcd723ee7a84bc868142fd57717af88e54e555a
- https://git.kernel.org/stable/c/4c94557dd02569efa6c1072a0439addaef9a5224
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.