CVE-2022-50151

Kernel warning via GFP_DMA32 TRB allocation

Published Jun 18, 2025 · Updated Aug 15, 2026

Improper allocation handling in the Linux cdns3 USB gadget driver from 5.13 allows local users to trigger a kernel warning during driver loading. cdns3_allocate_trb_pool passes GFP_DMA32 through dma_pool_alloc to kmalloc even though coherent DMA allocation already selects the proper memory region. Reachability requires the cdns3 gadget driver to allocate its TRB pool; published records demonstrate a warning but do not describe a crash or data compromise.

CVSS severity7.8
High
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

Improper allocation handling in the Linux cdns3 USB gadget driver from 5.13 allows local users to trigger a kernel warning during driver loading. cdns3_allocate_trb_pool passes GFP_DMA32 through dma_pool_alloc to kmalloc even though coherent DMA allocation already selects the proper memory region. Reachability requires the cdns3 gadget driver to allocate its TRB pool; published records demonstrate a warning but do not describe a crash or data compromise.

The record

CVE
CVE-2022-50151
Published
Jun 18, 2025
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.13
  2. Affected versionversion=b9b1eae761eeae665824ca6ef7f91da4fc798ebb <8659ab3d936fcf0084676f98b75b317017aa8f82
  3. Affected versionversion=b9b1eae761eeae665824ca6ef7f91da4fc798ebb <8e142744f0e96abc69ccd99e6d6c7eb662267f21
  4. Affected versionversion=b9b1eae761eeae665824ca6ef7f91da4fc798ebb <960a8a35a6027a08c4b511435bf59609b5d5e5cd

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=b9b1eae761eeae665824ca6ef7f91da4fc798ebb <8659ab3d936fcf0084676f98b75b317017aa8f82; version=b9b1eae761eeae665824ca6ef7f91da4fc798ebb <8e142744f0e96abc69ccd99e6d6c7eb662267f21; version=b9b1eae761eeae665824ca6ef7f91da4fc798ebb <960a8a35a6027a08c4b511435bf59609b5d5e5cd

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/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

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
Privilegesauthenticated
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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