What’s Vulnerable › Vulnerabilities

CVE-2026-98291: Bluetooth: btintel_pcie: fix off-by-one bounds check in RX submit

• 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: 2026-10-06 · updated 2026-10-19

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.

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/18464860ce27af0dccd2fc72830610b85b518cff
• https://git.kernel.org/stable/c/2ea5a87a5a7ae58cb2662b8a7d06f209383e1765
• https://git.kernel.org/stable/c/b5214d72bfdf8ef7744d0c8147e6ebb09b36b259
• https://git.kernel.org/stable/c/de4c3c72bcc6e8474f70c22427f94ca44bccd890

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