Riskcovery

CVE-2022-49138

Bluetooth: hci_event: Ignore multiple conn complete events

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

Read the record on cve.org

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

Scores

CVSSScoreVectorSource
3.18.8 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 7d0db0a373195385a2e0b19d1f5e4b186fdcffac to before aa1ca580e3ffe62a2c5ea1c095b609b2943c5269Affected
  • 7d0db0a373195385a2e0b19d1f5e4b186fdcffac to before d5ebaa7c5f6f688959e8d40840b2249ede63b8edAffected
LinuxLinux
  • 2.6.27Affected
  • before 2.6.27Not affected
  • 5.17.3 through 5.17.*Not affected
  • 5.18 and laterNot affected

References

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