CVE-2022-49136

Bluetooth: hci_sync: Fix queuing commands when HCI_UNREGISTER is set

State: Published
Severity: 7.8 High
Published: Feb 26, 2025
Updated: Aug 5, 2026
Reserved: Feb 26, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_sync: Fix queuing commands when HCI_UNREGISTER is set

hci_cmd_sync_queue shall return an error if HCI_UNREGISTER flag has been set as that means hci_unregister_dev has been called so it will likely cause a uaf after the timeout as the hdev will be freed.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
LinuxLinux	6a98e3836fa2077b169f10a35c2ca9952d53f987 to before 1c69ef84a808676cceb69210addf5df45b741323Affected 6a98e3836fa2077b169f10a35c2ca9952d53f987 to before 0b94f2651f56b9e4aa5f012b0d7eb57308c773cfAffected
LinuxLinux	5.17Affected before 5.17Not affected 5.17.3 through 5.17.*Not affected 5.18 and laterNot affected

References

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