What’s Vulnerable › Vulnerabilities

CVE-2026-98731: Bluetooth: btintel_pcie: fix plen overflow in btintel_pcie_recv_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: fix plen overflow in btintel_pcie_recv_frame() plen is u16 and computed as HDR_SIZE + dlen. For ACL/ISO frames dlen is a 16-bit field, so a value >= 0xFFFC wraps the sum, bypassing the "skb->len < plen" check and letting skb_trim() truncate the packet. Widen plen to u32 so the addition cannot wrap.

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/7dbeb6935ac331b0cba6c41cabd8e9d02d5f64ea
• https://git.kernel.org/stable/c/b2cb5ea1dc8cf829816370fc1399e6a1d2d1bca9
• https://git.kernel.org/stable/c/c3a3842c109ac130c6db3aa0014cc8cd344928ad
• https://git.kernel.org/stable/c/c3b5e6da4ba6485bffda9753d8339c28855207aa

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