CVE-2026-64349

Unspecified impact via wrong DWC3 helper argument

Published Jul 25, 2026 · Updated Jul 25, 2026

Incorrect pointer use in Linux Kernel 6.18.32 through 6.18.39 and 7.0 allows attackers to cause unspecified impact via unspecified vectors. The dwc3_ulpi_setup() function passes dwc3->regs, an I/O-memory pointer, to dwc3_readl() and dwc3_writel(), which require the enclosing dwc3 structure. The calls run only with a ULPI PHY and USB 2.0 transceiver delay enabled; Linux has not demonstrated a concrete consequence beyond an address-space warning.

CVSS severityUnavailable
Unscored
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect pointer use in Linux Kernel 6.18.32 through 6.18.39 and 7.0 allows attackers to cause unspecified impact via unspecified vectors. The dwc3_ulpi_setup() function passes dwc3->regs, an I/O-memory pointer, to dwc3_readl() and dwc3_writel(), which require the enclosing dwc3 structure. The calls run only with a ULPI PHY and USB 2.0 transceiver delay enabled; Linux has not demonstrated a concrete consequence beyond an address-space warning.

The record

CVE
CVE-2026-64349
Published
Jul 25, 2026
Updated
Jul 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 25, 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=476ee6389120e1900290b46081b3a12b54e05672 <41a4e80d5af04855e68ac88f5e2cd07fa67287f8
  2. Affected versionversion=6.18.32 <6.18.40
  3. Affected versionversion=7.0
  4. Affected versionversion=9accc68b1cf0a2b220f51d53641128bb32598070 <4349e487a1149ff33b65d53427b8aca57f2e4578
  5. Affected versionversion=9accc68b1cf0a2b220f51d53641128bb32598070 <e0f844d9d74200d311c6438a0f04270834ba5365

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linux Kernelversion=476ee6389120e1900290b46081b3a12b54e05672 <41a4e80d5af04855e68ac88f5e2cd07fa67287f8; version=6.18.32 <6.18.40; version=7.0; version=9accc68b1cf0a2b220f51d53641128bb32598070 <4349e487a1149ff33b65d53427b8aca57f2e4578; version=9accc68b1cf0a2b220f51d53641128bb32598070 <e0f844d9d74200d311c6438a0f04270834ba5365

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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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