SB20260928198 - Race condition in Linux kernel iommu riscv driver
Published: September 28, 2026 Updated: September 30, 2026
Security Bulletin ID
SB20260928198
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Race condition (CVE-ID: CVE-2026-98004)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause command queue submission failures.
The vulnerability exists due to a race condition in the RISC-V IOMMU command queue when publishing commands concurrently. A local user can concurrently submit IOMMU commands to cause command queue submission failures.
Remediation
Install update from vendor's website.