CVE-2026-98392 Bluetooth: btintel_pcie: fix tx_handle bounds off-by-one
An off-by-one error in the Intel PCIe Bluetooth driver allows out-of-bounds access, potentially leading to system crashes or code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-98392?
CVE-2026-98392 is a vulnerability in Linux, published on 14 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: btintel_pcie: fix tx_handle bounds off-by-one
Valid indices into txq->urbd0s/tfds/bufs are 0..txq->count-1, so tfd_index == txq->count is already out of range. Change the guard in btintel_pcie_msix_tx_handle() from '> txq->count' to '>= txq->count'.
This issue was reported by Claude Mythos.
Which versions are affected by CVE-2026-98392?
How do I fix CVE-2026-98392?
Apply the vendor's patch.
Is CVE-2026-98392 being exploited?
There is no known exploitation of CVE-2026-98392 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-98392, DEBIAN-CVE-2026-98392, GHSA-j4c2-pp7j-2j5f, UBUNTU-CVE-2026-98392.