CVE-2022-49138 (GCVE-0-2022-49138)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:55 – Updated: 2025-12-23 13:22
VLAI?
Title
Bluetooth: hci_event: Ignore multiple conn complete events
Summary
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
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7d0db0a373195385a2e0b19d1f5e4b186fdcffac , < aa1ca580e3ffe62a2c5ea1c095b609b2943c5269 (git)
Affected: 7d0db0a373195385a2e0b19d1f5e4b186fdcffac , < d5ebaa7c5f6f688959e8d40840b2249ede63b8ed (git)
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    Linux Linux Affected: 2.6.27
Unaffected: 0 , < 2.6.27 (semver)
Unaffected: 5.17.3 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: Ignore multiple conn complete events\n\nWhen one of the three connection complete events is received multiple\ntimes for the same handle, the device is registered multiple times which\nleads to memory corruptions. Therefore, consequent events for a single\nconnection are ignored.\n\nThe conn-\u003estate can hold different values, therefore HCI_CONN_HANDLE_UNSET\nis introduced to identify new connections. To make sure the events do not\ncontain this or another invalid handle HCI_CONN_HANDLE_MAX and checks\nare introduced.\n\nBuglink: https://bugzilla.kernel.org/show_bug.cgi?id=215497"
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    "datePublished": "2025-02-26T01:55:10.632Z",
    "dateReserved": "2025-02-26T01:49:39.268Z",
    "dateUpdated": "2025-12-23T13:22:10.838Z",
    "state": "PUBLISHED"
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.