CVE-2026-98291 Bluetooth: btintel_pcie: fix off-by-one bounds check in RX submit
An off-by-one error in the Linux kernel Bluetooth driver allows out-of-bounds memory 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-2026-98291?
CVE-2026-98291 is a vulnerability in Linux, published on 6 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 off-by-one bounds check in RX submit
btintel_pcie_submit_rx() used frbd_index > rxq->count to guard the FRBD array access, allowing frbd_index == rxq->count to pass through and index one element past the end of the array. Change the check to >= rxq->count so every out-of-range index is rejected.
This issue was reported by Claude Mythos.
Which versions are affected by CVE-2026-98291?
How do I fix CVE-2026-98291?
Apply the vendor's patch.
Is CVE-2026-98291 being exploited?
There is no known exploitation of CVE-2026-98291 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-98291, DEBIAN-CVE-2026-98291, GHSA-7r69-vgp4-2564, UBUNTU-CVE-2026-98291.