SB20251226320 - Buffer overflow in Linux kernel iommu iommufd driver
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251226320
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-2023-54043)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the iommufd_device_attach() function in drivers/iommu/iommufd/device.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.