CVE-2025-21690: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: scsi: storvsc: Ratelimit warning logs to prevent VM denial of service If there's a persistent error in the hypervisor, the SCSI warning for failed I/O can flood the kernel log and max out CPU utilization, preventing troubleshooting from the VM side. Ratelimit the warning so it doesn't DoS the VM.

Affected products

• Linux Linux Kernel: before 5.15.178 (fixed in 5.15.178); from 5.16, before 6.1.128 (fixed in 6.1.128); from 6.2, before 6.6.75 (fixed in 6.6.75); from 6.7, before 6.12.12 (fixed in 6.12.12); version 6.13 only

Published 2025-02-10. Last modified 2026-06-17.