What’s Vulnerable › Vulnerabilities

CVE-2026-98730: Bluetooth: btintel_pcie: reject oversized TX packets in send_frame()

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-18 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel_pcie: reject oversized TX packets in send_frame() btintel_pcie_send_frame() eventually copies skb->data into a fixed BTINTEL_PCIE_BUFFER_SIZE (4096) DMA buffer via memcpy() in btintel_pcie_prepare_tx(), with a 4-byte PCIe type header prepended. A user-space process with HCI_CHANNEL_USER access can inject an oversized packet and overflow the buffer. Reject packets larger than BTINTEL_PCIE_BUFFER_SIZE - BTINTEL_PCIE_HCI_TYPE_LEN on entry.

Affected products

• Linux kernel: 6.10 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3d6ba6be9bef13edcd4ad74f7cfdd0c34db4d2bc
• https://git.kernel.org/stable/c/84df222de86eabed543361025ed54ce838c0b573
• https://git.kernel.org/stable/c/9806a748f9ab223b733624367b6ddda77fb9450e
• https://git.kernel.org/stable/c/f771f96557a4d953a7e4d045870547271e36e819

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