SB2025102053 - Input validation error in Linux kernel 9p
Published: October 20, 2025
Security Bulletin ID
SB2025102053
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 security vulnerability.
1) Input validation error (CVE-ID: CVE-2025-40004)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the usb9pfs_rx_complete() function in net/9p/trans_usbg.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.