Linux Kernel SCSI Driver Device Link State Management Flaw

CVE-2026-80653 is a race condition vulnerability in the Linux kernel's HiSilicon SAS (Serial Attached SCSI) driver affecting v3 hardware. The vulnerability occurs when a remote PHY link reset is executed simultaneously with SAS driver module removal (rmmod), causing improper device link state management. This triggers a WARNING condition in the kernel's device core infrastructure when attempting to clean up device links without an active driver. The vulnerability affects Linux systems running affected kernel versions with HiSilicon SAS SCSI controllers, particularly in data center and enterprise environments where remote PHY resets and driver updates may occur concurrently.

While this CVE does not currently map to specific MITRE ATT&CK techniques, Casky's extended reasoning capabilities would detect the underlying patterns through kernel state machine analysis and driver lifecycle monitoring. Practitioners using Casky would observe anomalous behavior in system logs showing device_release_driver() execution during active device operations, coupled with __device_links_no_driver warnings that indicate improper resource cleanup sequences. The detection would focus on temporal correlation between two concurrent events—PHY reset operations and driver module operations—that create unsafe state transitions. Advanced practitioners would map this to T1529 (Service Stop) and persistence-related techniques where driver state corruption could be exploited, enabling Casky to flag the vulnerability through behavioral analysis of kernel subsystem interactions rather than signature-based detection.