vulnerability

Red Hat: CVE-2024-42132: kernel: bluetooth/hci: disallow setting handle bigger than HCI_CONN_HANDLE_MAX (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
2024-07-30
Added
2024-12-05
Modified
2025-03-10

Description

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.

Solution(s)

redhat-upgrade-kernelredhat-upgrade-kernel-rt
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