Linux Kernel up to 6.18.39/7.1.3/7.2-rc2 dwc3 drivers/usb/dwc3/core.c dwc3_ulpi_setup regs initialization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as very critical has been discovered in Linux Kernel up to 6.18.39/7.1.3/7.2-rc2. Impacted is the function dwc3_ulpi_setup of the file drivers/usb/dwc3/core.c of the component dwc3. Executing a manipulation of the argument regs can lead to initialization. This vulnerability is handled as CVE-2026-64349. It is possible to launch the attack on the local host. There is not any exploit available.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.18.39/7.1.3/7.2-rc2. It has been declared as very critical. This vulnerability affects the function dwc3_ulpi_setup of the file drivers/usb/dwc3/core.c of the component dwc3. The manipulation of the argument regs with an unknown input leads to a initialization vulnerability. The CWE definition for the vulnerability is CWE-665. The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: fix dwc3_readl() and dwc3_writel() calls in dwc3_ulpi_setup() The dwc3_ulpi_setup() calls the register read and write calls with dwc3->regs when both these calls take the dwc3 structure directly. Chnage these two calls to fix the following sparse warning, and possibly a nasty bug in the dwc3_ulpi_setup() code: drivers/usb/dwc3/core.c:796:45: warning: incorrect type in argument 1 (different address spaces) drivers/usb/dwc3/core.c:796:45: expected struct dwc3 *dwc drivers/usb/dwc3/core.c:796:45: got void [noderef] __iomem *regs drivers/usb/dwc3/core.c:798:40: warning: incorrect type in argument 1 (different address spaces) drivers/usb/dwc3/core.c:798:40: expected struct dwc3 *dwc drivers/usb/dwc3/core.c:798:40: got void [noderef] __iomem *regs

The advisory is available at git.kernel.org. This vulnerability was named CVE-2026-64349 since 07/19/2026. The exploitation appears to be easy. Local access is required to approach this attack. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/27/2026).

The vulnerability scanner Nessus provides a plugin with the ID 329916 (Linux Distros Unpatched Vulnerability : CVE-2026-64349), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.18.40, 7.1.4 or 7.2-rc3 eliminates this vulnerability. Applying the patch 41a4e80d5af04855e68ac88f5e2cd07fa67287f8/4349e487a1149ff33b65d53427b8aca57f2e4578/e0f844d9d74200d311c6438a0f04270834ba5365 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at Tenable (329916). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Initialization
CWE: CWE-665
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 329916
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-64349

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.40/7.1.4/7.2-rc3
Patch: 41a4e80d5af04855e68ac88f5e2cd07fa67287f8/4349e487a1149ff33b65d53427b8aca57f2e4578/e0f844d9d74200d311c6438a0f04270834ba5365

Timelineinfo

07/19/2026 CVE reserved
07/25/2026 +6 days Advisory disclosed
07/25/2026 +0 days VulDB entry created
07/27/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-64349 (🔒)
GCVE (CVE): GCVE-0-2026-64349
GCVE (VulDB): GCVE-100-383146

Entryinfo

Created: 07/25/2026 16:36
Updated: 07/27/2026 00:37
Changes: 07/25/2026 16:36 (61), 07/27/2026 00:37 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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