SB2025091736 - Buffer overflow in Linux kernel iommu iommufd driver
Published: September 17, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091736
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-2023-53327)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the iommufd_test_md_check_pa() and iommufd_test_md_check_refs() functions in drivers/iommu/iommufd/selftest.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/3fb3505636d033bbf7a0851dac63d01732c51d62
- https://git.kernel.org/stable/c/adac6508c235a092b91ed9c0110ecf140e9e9441
- https://git.kernel.org/stable/c/fd8c1a4aee973e87d890a5861e106625a33b2c4e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4