SB20251230300 - Buffer overflow in Linux kernel iommu iommufd driver
Published: December 30, 2025
Security Bulletin ID
SB20251230300
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-2023-54239)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the iopt_alloc_pages() function in drivers/iommu/iommufd/pages.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.