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CVE-2025-37861 is a Linux kernel vulnerability in the SCSI mpi3mr driver caused by improper synchronization between the reset thread and the task management thread while accessing reply queues. During controller reset handling, the reset path can invalidate a reply queue identifier by setting it to a sentinel value, while the task management thread continues processing and dereferences that invalid queue identifier. This results in access to unallocated memory and can crash the kernel. The upstream fix introduces an io_admin_reset_sync synchronization flag to coordinate reset, I/O, and admin thread activity, block processing during reset, and wait for in-flight processing to quiesce before queue reset proceeds.
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Listed as one of 573 vulnerabilities addressed by SUSE-SU-2026:20560-1 for kernel packages in SUSE Linux Micro Extras 6.2.
A Linux kernel vulnerability in the scsi: mpi3mr component caused by a race condition between reset and task management thread handling of reply queues, leading to use of an invalid queue ID and a crash.
A Linux kernel vulnerability in the scsi mpi3mr component involving synchronous access between reset and tm thread for the reply queue.
A Linux kernel flaw in the scsi mpi3mr component involving synchronous access between reset and tm thread for the reply queue.
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Cross-references every affected SKU, including bundled OEM variants.
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