CVE-2022-50175

Service interruption via leaked video-device allocation

Published Jun 18, 2025 · Updated May 11, 2026

Memory leak in the tw686x media driver in Linux allows local users to cause a service interruption through kernel-memory exhaustion. In tw686x_video_init, video_device_alloc allocates vdev, but the video_register_device failure path omits video_device_release and retains that allocation. The path requires local low-privileged access and TW686x PCI video-capture hardware; repeated registration failures consume kernel memory without affecting confidentiality or integrity.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the tw686x media driver in Linux allows local users to cause a service interruption through kernel-memory exhaustion. In tw686x_video_init, video_device_alloc allocates vdev, but the video_register_device failure path omits video_device_release and retains that allocation. The path requires local low-privileged access and TW686x PCI video-capture hardware; repeated registration failures consume kernel memory without affecting confidentiality or integrity.

The record

CVE
CVE-2022-50175
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

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=4.7
  2. Affected versionversion=704a84ccdbf19fdce9adfda0b936dfdcac52fa49 <0597bcf774896a002edcc7934a9cdbb932b66702
  3. Affected versionversion=704a84ccdbf19fdce9adfda0b936dfdcac52fa49 <611f86965df013d6021e6cd0d155b1734ad2cf21
  4. Affected versionversion=704a84ccdbf19fdce9adfda0b936dfdcac52fa49 <8b412db51db24dfba22c96948580d4a12f831397
  5. Affected versionversion=704a84ccdbf19fdce9adfda0b936dfdcac52fa49 <c142a7531b90c6b0f946c82d3f504b3f36a207df
  6. Affected versionversion=704a84ccdbf19fdce9adfda0b936dfdcac52fa49 <e0b212ec9d8177d6f7c404315293f6a085d6ee42

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.7; version=704a84ccdbf19fdce9adfda0b936dfdcac52fa49 <0597bcf774896a002edcc7934a9cdbb932b66702; version=704a84ccdbf19fdce9adfda0b936dfdcac52fa49 <611f86965df013d6021e6cd0d155b1734ad2cf21; version=704a84ccdbf19fdce9adfda0b936dfdcac52fa49 <8b412db51db24dfba22c96948580d4a12f831397; version=704a84ccdbf19fdce9adfda0b936dfdcac52fa49 <c142a7531b90c6b0f946c82d3f504b3f36a207df; version=704a84ccdbf19fdce9adfda0b936dfdcac52fa49 <e0b212ec9d8177d6f7c404315293f6a085d6ee42

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499.004Endpoint Denial of Service: Application 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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