CVE-2024-42132: Linux Kernel

High severity, CVSS 7.1. EPSS: 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: bluetooth/hci: disallow setting handle bigger than HCI_CONN_HANDLE_MAX Syzbot hit warning in hci_conn_del() caused by freeing handle that was not allocated using ida allocator. This is caused by handle bigger than HCI_CONN_HANDLE_MAX passed by hci_le_big_sync_established_evt(), which makes code think it's unset connection. Add same check for handle upper bound as in hci_conn_set_handle() to prevent warning.

Affected products

• Linux Linux Kernel: from 6.5.12, before 6.6 (fixed in 6.6); from 6.6.2, before 6.6.39 (fixed in 6.6.39); from 6.7, before 6.9.9 (fixed in 6.9.9); version 6.10 only

Published 2024-07-30. Last modified 2026-08-04.