SB2025090512 - Buffer overflow in Linux kernel iommu iommufd driver
Published: September 5, 2025
Security Bulletin ID
SB2025090512
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2025-38688)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to memory corruption within the iopt_area_contig_next() function in drivers/iommu/iommufd/io_pagetable.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/79fad1917802c28de51a479318a056a6fbe3e2f2
- https://git.kernel.org/stable/c/b42497e3c0e74db061eafad41c0cd7243c46436b
- https://git.kernel.org/stable/c/d19b817540c0abe84854a64ee9ee34cecc3bbeef
- https://git.kernel.org/stable/c/e42a046bb41dcdde4f766a17d8211842007ed537
- https://git.kernel.org/stable/c/ebb6021560b94649bec6b8faba6fe0dca2218e81