CVE-2022-49138

Bluetooth: hci_event: Ignore multiple conn complete events

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

N/A

CVSS

Severity:

EPSS 0.03%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/aa1ca580e3ffe62a2c5ea1c095b609b2943c5269
https://git.kernel.org/stable/c/d5ebaa7c5f6f688959e8d40840b2249ede63b8ed

Frequently Asked Questions

What is the severity of CVE-2022-49138?: CVE-2022-49138 has not yet been assigned a CVSS score.
How to fix CVE-2022-49138?: To fix CVE-2022-49138, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-49138 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-49138 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-49138?: CVE-2022-49138 affects Linux Linux, Linux Linux.

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