CVE-2022-50626

Service interruption via DVB-USB initialization leak

Published Dec 8, 2025 · Updated May 11, 2026

A memory leak in the Linux DVB-USB adapter initializer allows attackers to consume kernel memory through failed device initialization. The dvb_usb_adapter_init function exits through several error paths before incrementing num_adapters_initalized and leaves the current adapter private allocation unfreed. Reaching the leak requires a DVB-USB device and an initialization failure; repeated failures leave additional kernel memory unavailable.

CVSS severity4.1
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

A memory leak in the Linux DVB-USB adapter initializer allows attackers to consume kernel memory through failed device initialization. The dvb_usb_adapter_init function exits through several error paths before incrementing num_adapters_initalized and leaves the current adapter private allocation unfreed. Reaching the leak requires a DVB-USB device and an initialization failure; repeated failures leave additional kernel memory unavailable.

The record

CVE
CVE-2022-50626
Published
Dec 8, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Dec 8, 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=2.6.19
  2. Affected versionversion=4d43e13f723e12734257277cc38497fab1efc605 <17217737c174883dd975885ab4bee4b00f517239
  3. Affected versionversion=4d43e13f723e12734257277cc38497fab1efc605 <21b6b0c9f3796e6917e90db403dae9e74025fc40
  4. Affected versionversion=4d43e13f723e12734257277cc38497fab1efc605 <733bc9e226da2a7f43b10031b8ebfc26d89ec4bd
  5. Affected versionversion=4d43e13f723e12734257277cc38497fab1efc605 <7d7ab25ead969594df05fb09ee46ca931d46c5c8
  6. Affected versionversion=4d43e13f723e12734257277cc38497fab1efc605 <93bbf2ed428142aa9a9693721230b28571678bf8
  7. Affected versionversion=4d43e13f723e12734257277cc38497fab1efc605 <94d90fb06b94a90c176270d38861bcba34ce377d
  8. Affected versionversion=4d43e13f723e12734257277cc38497fab1efc605 <d0af6220bb1eed8225a5511de5a3bd386b94afa4
  9. Affected versionversion=4d43e13f723e12734257277cc38497fab1efc605 <e5a49140035591d13ff57a7537c65217e5af0d15
  10. Affected versionversion=4d43e13f723e12734257277cc38497fab1efc605 <e5d01eb6dc2f699a395d3e731c58a9b3bb4e269f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.19; version=4d43e13f723e12734257277cc38497fab1efc605 <17217737c174883dd975885ab4bee4b00f517239; version=4d43e13f723e12734257277cc38497fab1efc605 <21b6b0c9f3796e6917e90db403dae9e74025fc40; version=4d43e13f723e12734257277cc38497fab1efc605 <733bc9e226da2a7f43b10031b8ebfc26d89ec4bd; version=4d43e13f723e12734257277cc38497fab1efc605 <7d7ab25ead969594df05fb09ee46ca931d46c5c8; version=4d43e13f723e12734257277cc38497fab1efc605 <93bbf2ed428142aa9a9693721230b28571678bf8; version=4d43e13f723e12734257277cc38497fab1efc605 <94d90fb06b94a90c176270d38861bcba34ce377d; version=4d43e13f723e12734257277cc38497fab1efc605 <d0af6220bb1eed8225a5511de5a3bd386b94afa4; version=4d43e13f723e12734257277cc38497fab1efc605 <e5a49140035591d13ff57a7537c65217e5af0d15; version=4d43e13f723e12734257277cc38497fab1efc605 <e5d01eb6dc2f699a395d3e731c58a9b3bb4e269f

Published CVSS scores

4.1SUSECVSS:3.1/AV:L/AC:H/PR:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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