CVE-2022-49138

Service interruption via duplicate Bluetooth connection events

Published Feb 26, 2025 · Updated Aug 5, 2026

Memory corruption in Linux kernel Bluetooth before 5.17.3 allows attackers to interrupt service via duplicate connection-complete events. The hci_event connection-complete handlers can register the same device repeatedly because reused or invalid handles are not rejected reliably. Delivery of repeated HCI events for one handle is required, and the resulting kernel-memory corruption causes a crash or host instability.

CVSS severity5.7
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in Linux kernel Bluetooth before 5.17.3 allows attackers to interrupt service via duplicate connection-complete events. The hci_event connection-complete handlers can register the same device repeatedly because reused or invalid handles are not rejected reliably. Delivery of repeated HCI events for one handle is required, and the resulting kernel-memory corruption causes a crash or host instability.

The record

CVE
CVE-2022-49138
Published
Feb 26, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.6.27
  2. Affected versionversion=7d0db0a373195385a2e0b19d1f5e4b186fdcffac <aa1ca580e3ffe62a2c5ea1c095b609b2943c5269
  3. Affected versionversion=7d0db0a373195385a2e0b19d1f5e4b186fdcffac <d5ebaa7c5f6f688959e8d40840b2249ede63b8ed

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.27; version=7d0db0a373195385a2e0b19d1f5e4b186fdcffac <aa1ca580e3ffe62a2c5ea1c095b609b2943c5269; version=7d0db0a373195385a2e0b19d1f5e4b186fdcffac <d5ebaa7c5f6f688959e8d40840b2249ede63b8ed

Published CVSS scores

5.7NIST NVDCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.4SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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