SB2025100971 - Improper resource shutdown or release in Linux kernel iommu driver
Published: October 9, 2025
Security Bulletin ID
SB2025100971
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) Improper resource shutdown or release (CVE-ID: CVE-2025-39958)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to failure to properly release resources within the get_iota_region_flag(), s390_iommu_attach_device() and s390_attach_dev_identity() functions in drivers/iommu/s390-iommu.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.