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CVE-2026-99094: Bluetooth: btintel_pcie: fix TX descriptor bounds check

• Severity: high (CVSS 7.5 v3.1)
• 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: 2026-10-26 · updated 2026-10-31

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel_pcie: fix TX descriptor bounds check btintel_pcie_prepare_tx() uses tfd_index to access the TFD and data buffer arrays before the index is advanced modulo txq->count. An index equal to txq->count is one past the end of both arrays, so reject it in the bounds check.

Affected products

• Linux: 6.10 — fixed in 7.3

How to fix

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

References

• https://git.kernel.org/stable/c/08704ec6d4bf69725e7815b09a9b5c7af83e255b
• https://git.kernel.org/stable/c/2669567615215d52fb306053cbcc1f53dc386158
• https://git.kernel.org/stable/c/39ab048cce70d50af48015f5f294c4cf80d6ba89
• https://git.kernel.org/stable/c/baa53af641c9e3644e717b8dfd1b95a55a0c111b

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