CVE-2022-50419

Adjacent kernel crash via repeated device registration

Published Sep 18, 2025 · Updated Sep 18, 2025

Improper device registration in the Linux kernel Bluetooth subsystem allows adjacent attackers to crash the kernel through LE CIS events. hci_conn_add_sysfs calls device_add again for an HCI connection whose sysfs device was already registered, corrupting the kernel device list. Reachability requires Bluetooth LE Audio or related CIS event handling from a nearby peer or controller; the observed consequence is a kernel BUG and service interruption.

CVSS severity8.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper device registration in the Linux kernel Bluetooth subsystem allows adjacent attackers to crash the kernel through LE CIS events. hci_conn_add_sysfs calls device_add again for an HCI connection whose sysfs device was already registered, corrupting the kernel device list. Reachability requires Bluetooth LE Audio or related CIS event handling from a nearby peer or controller; the observed consequence is a kernel BUG and service interruption.

The record

CVE
CVE-2022-50419
Published
Sep 18, 2025
Updated
Sep 18, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-415, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2025Record 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1b6c89571f453101251201f0fad1c26f7256e937
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3423a50fa018e88aed4c900d59c3c8334d8ad583
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <448a496f760664d3e2e79466aa1787e6abc922b5
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4bcefec3636208b4c97536b26014d5935d5c10a0
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6144423712d570247b8ca26e50a277c30dd13702
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <671fee73e08ff415d36a7c16bdf238927df83884
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6e85d2ad958c6f034b1b158d904019869dbb3c81
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7b674dce4162bb46d396586e30e4653427023875
  9. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ef055094df4c10b73cfe67c8d43f9de1fb608a8b

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1b6c89571f453101251201f0fad1c26f7256e937; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3423a50fa018e88aed4c900d59c3c8334d8ad583; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <448a496f760664d3e2e79466aa1787e6abc922b5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4bcefec3636208b4c97536b26014d5935d5c10a0; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6144423712d570247b8ca26e50a277c30dd13702; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <671fee73e08ff415d36a7c16bdf238927df83884; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6e85d2ad958c6f034b1b158d904019869dbb3c81; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7b674dce4162bb46d396586e30e4653427023875; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ef055094df4c10b73cfe67c8d43f9de1fb608a8b

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8kernel.orgCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-415Double Free
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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