CVE-2022-50034

Invalid kernel-memory read via freed request unlink

Published Jun 18, 2025 · Updated Aug 15, 2026

Use-after-free in the Linux kernel allows attackers to trigger an invalid memory read in the cdns3 USB gadget driver. In cdns3_wa2_remove_old_request(), cdns3_gadget_ep_free_request() releases priv_req before list_del_init() unlinks priv_req->list. The public record does not identify an attacker-controlled trigger or claim data exposure; observed behavior is a KFENCE-detected read after free.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel allows attackers to trigger an invalid memory read in the cdns3 USB gadget driver. In cdns3_wa2_remove_old_request(), cdns3_gadget_ep_free_request() releases priv_req before list_del_init() unlinks priv_req->list. The public record does not identify an attacker-controlled trigger or claim data exposure; observed behavior is a KFENCE-detected read after free.

The record

CVE
CVE-2022-50034
Published
Jun 18, 2025
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=5.4
  2. Affected versionversion=6bbf87a131edd39040974f3843ff97e89310ebde <6d7ac60098b206d0472475b666cb09d556bec03d
  3. Affected versionversion=6bbf87a131edd39040974f3843ff97e89310ebde <6fd50446e7c9a98b4bcf96815f5c9602a16ea472
  4. Affected versionversion=6bbf87a131edd39040974f3843ff97e89310ebde <7d602f30149a117eea260208b1661bc404c21dfd
  5. Affected versionversion=6bbf87a131edd39040974f3843ff97e89310ebde <c3c1dbad3a2db32ecf371c97f2058491b8ba0f9a
  6. Affected versionversion=6bbf87a131edd39040974f3843ff97e89310ebde <e65d9b7147d7be3504893ca7dfb85286bda83d40

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.4; version=6bbf87a131edd39040974f3843ff97e89310ebde <6d7ac60098b206d0472475b666cb09d556bec03d; version=6bbf87a131edd39040974f3843ff97e89310ebde <6fd50446e7c9a98b4bcf96815f5c9602a16ea472; version=6bbf87a131edd39040974f3843ff97e89310ebde <7d602f30149a117eea260208b1661bc404c21dfd; version=6bbf87a131edd39040974f3843ff97e89310ebde <c3c1dbad3a2db32ecf371c97f2058491b8ba0f9a; version=6bbf87a131edd39040974f3843ff97e89310ebde <e65d9b7147d7be3504893ca7dfb85286bda83d40

Published CVSS scores

No CVSS assessment is available in this record.

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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