CVE-2022-49984

Host crash via unchecked HID report pointer

Published Jun 18, 2025 · Updated May 11, 2026

NULL pointer dereference in the Linux kernel HID Steam driver from 4.18 allows attackers to crash the host via a malicious HID device. The steam_recv_report and steam_send_report paths obtain a struct hid_report from the device and dereference it without checking for NULL when the Feature Report is absent. Triggering requires a Steam-compatible HID device that omits the report; the resulting kernel fault interrupts only the attached host.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux kernel HID Steam driver from 4.18 allows attackers to crash the host via a malicious HID device. The steam_recv_report and steam_send_report paths obtain a struct hid_report from the device and dereference it without checking for NULL when the Feature Report is absent. Triggering requires a Steam-compatible HID device that omits the report; the resulting kernel fault interrupts only the attached host.

The record

CVE
CVE-2022-49984
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=4.18
  2. Affected versionversion=c164d6abf3841ffacfdb757c10616f9cb1f67276 <989560b6d9e00d99e07bc33067fa1c770994bf4d
  3. Affected versionversion=c164d6abf3841ffacfdb757c10616f9cb1f67276 <c20d03b82a2e3ddbb555dad4d4f3374a9763222c
  4. Affected versionversion=c164d6abf3841ffacfdb757c10616f9cb1f67276 <cd11d1a6114bd4bc6450ae59f6e110ec47362126
  5. Affected versionversion=c164d6abf3841ffacfdb757c10616f9cb1f67276 <dc815761948ab5b8c94db6cb53c95103588f16ae
  6. Affected versionversion=c164d6abf3841ffacfdb757c10616f9cb1f67276 <dee1e51b54794e90763e70a3c78f27ba4fa930ec
  7. Affected versionversion=c164d6abf3841ffacfdb757c10616f9cb1f67276 <fa2b822d86be5b5ad54fe4fa2daca464e71ff90a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=4.18; version=c164d6abf3841ffacfdb757c10616f9cb1f67276 <989560b6d9e00d99e07bc33067fa1c770994bf4d; version=c164d6abf3841ffacfdb757c10616f9cb1f67276 <c20d03b82a2e3ddbb555dad4d4f3374a9763222c; version=c164d6abf3841ffacfdb757c10616f9cb1f67276 <cd11d1a6114bd4bc6450ae59f6e110ec47362126; version=c164d6abf3841ffacfdb757c10616f9cb1f67276 <dc815761948ab5b8c94db6cb53c95103588f16ae; version=c164d6abf3841ffacfdb757c10616f9cb1f67276 <dee1e51b54794e90763e70a3c78f27ba4fa930ec; version=c164d6abf3841ffacfdb757c10616f9cb1f67276 <fa2b822d86be5b5ad54fe4fa2daca464e71ff90a

Published CVSS scores

5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.0Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/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)
Vectorlocal
PrivilegesUnavailable
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.

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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