SB20260507173 - Improper synchronization in Linux kernel usb dwc3 driver
Published: May 7, 2026
Security Bulletin ID
SB20260507173
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) Improper synchronization (CVE-ID: CVE-2026-43170)
CWE-ID: CWE-662 - Improper Synchronization
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper execution in atomic context in dwc3_gadget_vbus_draw() when invoking power-supply-core APIs. A local user can trigger USB gadget operations to cause a denial of service.
The issue can lead to a kernel panic because some PMIC operations may sleep.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/2333653ef854c2cc124077f71a8526f03bf6e06a
- https://git.kernel.org/stable/c/54aaa3b387c2f580a99dc86a9cc2eb6dfaf599a7
- https://git.kernel.org/stable/c/74a231e3d99d310497ab0ccb359539a6063b316a
- https://git.kernel.org/stable/c/76c1123ffccfaba95cf4ecc2a50f95504a522424
- https://git.kernel.org/stable/c/a7a80c25b65112768eeba58a7af129d3c52a6d90