CVE-2024-27416: Bluetooth: hci_event: Fix handling of HCI_EV_IO_CAPA_REQUEST

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-17 · updated 2026-08-04

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: Fix handling of HCI_EV_IO_CAPA_REQUEST If we received HCI_EV_IO_CAPA_REQUEST while HCI_OP_READ_REMOTE_EXT_FEATURES is yet to be responded assume the remote does support SSP since otherwise this event shouldn't be generated.

Affected products

Debian Linux: 10.0
Linux kernel: from 4.14.328 before 4.15; from 4.19.297 before 4.19.309; from 5.4.259 before 5.4.271; from 5.10.199 before 5.10.212; from 5.15.137 before 5.15.151; from 6.1.60 before 6.1.81 — fixed in 4.15, 4.19.309, 5.10.212, 5.15.151, 5.4.271, 6.1.81

How to fix

Upgrade to a fixed version: Linux kernel 4.15, 4.19.309, 5.10.212, 5.15.151. Check the vendor advisory for mitigations.

References

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