SB20260727218 - Type conversion in Linux kernel usb dwc3 driver
Published: July 27, 2026
Security Bulletin ID
SB20260727218
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Type conversion (CVE-ID: CVE-2026-64349)
CWE-ID: CWE-704 - Type conversion
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper access of device registers in dwc3_ulpi_setup() when configuring USB2 PHY settings. A local user can trigger the vulnerable code path to cause a denial of service.
The issue is associated with incorrect arguments passed to dwc3_readl() and dwc3_writel() in the DWC3 core driver.
Remediation
Install update from vendor's website.