SB2025090891 - Buffer overflow in Linux kernel s390 net driver
Published: September 8, 2025
Security Bulletin ID
SB2025090891
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) Buffer overflow (CVE-ID: CVE-2025-39726)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the ism_cmd() and ism_probe() functions in drivers/s390/net/ism_drv.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.