SB20260325126 - Improper input validation in Linux kernel can usb driver
Published: March 25, 2026
Security Bulletin ID
SB20260325126
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 input validation (CVE-ID: CVE-2026-23334)
CWE-ID: CWE-20 - Improper input validation
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 input validation in the CAN USB driver (f81604) when handling interrupt URB messages. A local user can provide a specially crafted interrupt URB message with incorrect length to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/36ead57443146e6b730ce1f48ca3e9b17e19a3d2
- https://git.kernel.org/stable/c/66615e6293388f75a56226d1216fd9cfb3d95e05
- https://git.kernel.org/stable/c/7299b1b39a255f6092ce4ec0b65f66e9d6a357af
- https://git.kernel.org/stable/c/9b740ff5bc649575a5e14ca8ee54e3dd5010aaf0
- https://git.kernel.org/stable/c/c5d69da6c919648838734097861e979677eedcde