CVE-2022-49138 Details
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: Ignore multiple conn complete events When one of the three connection complete events is received multiple times for the same handle, the device is registered multiple times which leads to memory corruptions. Therefore, consequent events for a single connection are ignored. The conn->state can hold different values, therefore HCI_CONN_HANDLE_UNSET is introduced to identify new connections. To make sure the events do not contain this or another invalid handle HCI_CONN_HANDLE_MAX and checks are introduced. Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=215497
A vulnerability in the Linux kernel's Bluetooth implementation has been addressed. The issue arose when multiple connection complete events were received for the same handle, causing the device to be registered multiple times. This duplication led to memory corruption. To resolve this, events for a single connection are now ignored if they are received multiple times. Additionally, a new handle identifier, HCI_CONN_HANDLE_UNSET, has been introduced to recognize new connections, and checks have been added to ensure events do not contain invalid handles.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/aa1ca580e3ffe62a2c5ea1c095b609b2943c5269 | kernel.org | Patch |
| https://git.kernel.org/stable/c/d5ebaa7c5f6f688959e8d40840b2249ede63b8ed | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | < 5.17.3 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 4, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Sep 23, 2025 | Initial Analysis | [email protected] |
| Feb 26, 2025 | New CVE Received | kernel.org |