CVE-2026-98296 Bluetooth: btintel_pcie: validate TX skb length in send_sync
A missing bounds check in the Linux kernel's Intel PCIe Bluetooth driver allows buffer overflows, potentially leading to code execution or system crashes.
- 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-2026-98296?
CVE-2026-98296 is a memory corruption 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: validate TX skb length in send_sync
btintel_pcie_prepare_tx() copies skb->len bytes into a fixed BTINTEL_PCIE_BUFFER_SIZE (4096) DMA slot via an unchecked memcpy. Oversized packets are currently rejected only in btintel_pcie_send_frame(); any future caller of btintel_pcie_send_sync() would silently overflow the DMA buffer.
Add the bounds check in btintel_pcie_send_sync() itself, right before skb_push() and the DMA copy.
Which versions are affected by CVE-2026-98296?
How do I fix CVE-2026-98296?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-98296 being exploited?
There is no known exploitation of CVE-2026-98296 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-98296, DEBIAN-CVE-2026-98296, GHSA-hx9c-7jvw-48j5, UBUNTU-CVE-2026-98296.